Triumph TR8 Specs

The TR8 by market: the coupé, the 49-state convertible with carburettors, the injected convertible of California and then all of North America, and the British pilot cars. Every figure is as a brochure, a magazine, a club or an enthusiast site printed it, and where they disagree the comparison says so.

About the pictureThe engine bay of a carburettor TR8, standing in for a whole 49-state convertible

Stand-in A carburettor TR8's engine bay, in Alberta, Canada, in July 2008, one Zenith-Stromberg carburettor showing beside the black airbox: the engine, standing in for the whole car.dave_7 from Lethbridge, Canada, CC BY-SA 2.0

The TR8 was built to more than one specification, and the comparison on this page sets them side by side: the coupé, the convertible for 49 states with carburettors, the injected convertible that California had in the 1980 model year and all of North America in the 1981 model year, and the right-hand-drive cars built for Britain. It shows values only; where the sources give other figures, a small asterisk beside the value opens a note with every figure in print and who gives it. The sections below explain the figures that need it and set out, in small tables, what the comparison does not hold.

The factory's source is Jaguar Rover Triumph's American brochure, printed in April 1980, which gives the 49-state figures with California's in brackets. The four American magazine tests of 1980 add what they measured on their own cars: Road & Track and Motor Trend in June, Road Test in July and Car and Driver in August. The road tests tell what the testers thought.⁠source 1source 2source 3source 4source 5

The 49-state convertible, 1980 model year

Outside California, the 1980 convertible breathed through two Zenith-Stromberg carburettors with automatic chokes and cleaned its exhaust with air injection, exhaust-gas recirculation and the brochure's "dual catalytic converters". Its rating is one of the few figures the brochure and the magazines agree on:

The rest of the country will get TR8s with engines fed by a pair of Stromberg carburetors, this setup producing 133 bhp at 5000 rpm and 174 lb-ft of torque at 3000 rpm.

Road & Track, June 1980

The brochure prints a lower torque figure than Road & Track and Road Test do, at the same engine speed, and the comparison's note gives both. Motor Trend printed a third figure for the carburettor engine, so far below the others that it is probably a misprint.⁠source 1source 6source 2source 5source 4

Item	Reading	Source
Fuel pump	Delco, electric	The brochure
Exhaust	Air injection, exhaust-gas recirculation, oxidation catalysts	The brochure; the California Air Resources Board's order of 1979 for the carburettor engine
Fuel economy, EPA	14 mpg (US) in town, 22 on the highway	Road Test; Road & Track for the highway figure

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The injected convertible, 1980 model year

California's convertible had Lucas/Bosch L-Jetronic injection with a Lucas control unit, run in a closed loop with a three-way catalyst and an oxygen sensor. Its power is the TR8's best-known dispute, because Jaguar Rover Triumph put two ratings into print in 1980, both SAE net. The magazines' press figures, which Road & Track, Motor Trend and Road Test printed, gave the lower; the company's own brochure of April 1980 gave the higher:

Horsepower: 133 @ 5000rpm (148 @ 5100rpm). Torque: 168 @ 3000rpm (180 @ 3250rpm).

Triumph TR8 brochure, Jaguar Rover Triumph Inc., April 1980

Car and Driver printed the brochure's figure for its injected car in August, and wrote that "Forty-nine-state cars get a pair of Zenith-Stromberg carburetors and fifteen less horsepower", which fits the higher figure. Motor Trend and Road Test print identical figures from the same press data, so they count as one source, not two. A Lucas engineer, quoted by triumphtr8.com, insisted on the lower figure. The comparison gives both, one of them behind its asterisk; the torque has three readings, and its note gives all of them.

The tests and the EPA give more than the comparison holds:

Item	Reading	Source
From rest to 161 km/h (100 mph)	24.4 seconds; 24.0 seconds	Road & Track; Car and Driver
Stopping from 97 km/h (60 mph)	55 m (179 ft); 49 m (162 ft)	Road & Track; Motor Trend
Stopping from 113 km/h (70 mph)	69 m (228 ft)	Car and Driver
Lateral acceleration	0.754 g	Road & Track
Slalom speed	97 km/h (60.5 mph)	Road & Track
Weight on the front wheels	57%, with a driver; 56.1%	Road & Track; Car and Driver
Fuel economy, EPA	16 mpg (US) in town, 26 on the highway	Road Test
Fuel economy on test	23.7 mpg (US) over 4,785 km (2,973 miles)	Road Test

The engine bay of a silver TR8, the V8 topped by the grey cast plenum of its fuel injection, with blue ignition leads. — With the bonnet propped open, the Lucas-Bosch injection's pipes and cast plenum on a silver car its photographer titles a 1980 TR8, at a classic car meet in Alberta, Canada, in July 2008.dave_7 from Lethbridge, Canada, CC BY-SA 2.0

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Chassis, body and dimensions

The suspension had MacPherson struts at the front, and at the back a live axle on four links with coil springs, with anti-roll bars at both ends. Its steering was power-assisted as standard, a General Motors Saginaw pump with an Adwest rack, as Road & Track reported in 1979. The front brakes were solid discs, which Autocar and Car and Driver both found thicker than the TR7's; their diameter is given differently by the brochure and the tests, and the comparison leads with the brochure's. The brochure's dimensions, weight and fuel tank lead in the comparison too, and the tests' own weighings, each with its label, are in its notes. Road & Track's data panel prints a fuel tank of 63.6 litres (16.8 US gallons), which no other source supports, and a number of turns of the steering wheel far above everyone else's, probably a misprint.

Item	Reading	Source
Turning circle	9.6 m (31.6 ft); 8.8 m (29.0 ft)	The brochure; Road & Track
Track, front and rear	1,410 and 1,405 mm (55.5 and 55.3 in)	The brochure; Road & Track
Steering wheel	A three-spoke alloy wheel, 337 mm (13.25 in) across, with a padded rim	The brochure
Tyres fitted	Goodyear G800+S; Michelin XVS	Road & Track's car; Car and Driver's and Motor Trend's
Boot (trunk), gross	275 litres (9.7 cu ft); 269 litres (9.5 cu ft)	The brochure; Road & Track
Coolant and engine oil	10.9 litres (23 US pints) and 5.1 litres (10.8 US pints)	The brochure
Electrics	12 V, negative earth; a 68 Ah battery; a 55 A alternator, 65 A with air conditioning	The brochure
Inside	Headroom 1,003 mm (39.5 in); legroom 1,054 mm (41.5 in); shoulder width 1,346 mm (53.0 in)	The brochure
Speed per 1,000 rpm in fifth	42.0 km/h (26.1 mph); 39.6 km/h (24.6 mph)	Road & Track; Car and Driver

Car and Driver's gearing would need a different axle or different tyres from Road & Track's or Autocar's, and no source explains it.⁠source 1source 2source 8source 3source 4source 9

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The 1981 model year

Every North American TR8 of the 1981 model year had the injection, certified in California under the engine family BJR215V5FA7, with exhaust-gas recirculation and a three-way catalyst in a closed loop. No source read settles the 1981 engine's power: Mike Cook's own data panel for a 1981 car prints a figure that is probably a misprint. Whether an automatic was offered that year is disputed too, and the versions page sets out both sides. triumphtr8.com's table gives the cars from chassis number 402027 taller gearing in fifth, 44.4 km/h (27.6 mph) per 1,000 rpm, but no factory source confirms a change.⁠source 10source 6source 11source 7

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The British pilot cars, 1980–81

Britain's right-hand-drive pilot cars ran on carburettors, with engines numbered 20E or 21E and more compression than the American ones; the chassis plate made for them rates them at a gross 1,420 kg, as the American TR8's does, though some carry a TR7 plate.

Type approval no. 377 gave the British car a design maximum speed; the comparison prints it beside the speed that triumphtr8.com, from Roy Ford's account, gives for the experimental car EXP 923 at MIRA.⁠source 12source 13source 7source 14source 9source 15

A silver TR8 convertible with its hood folded in a show car park, a red TR7 convertible beside it. — EXP 923, a right-hand-drive experimental TR8 built in 1980 for general development, at a show at the British Motor Museum, Gaydon, in July 2023.kitmasterbloke, CC BY 2.0

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Autocar's coupé, 1979

Autocar's John Miles drove YDU 617S, a left-hand-drive coupé built to American specification, in 1979. Its catalyst had been taken off so that it would run on leaded fuel, so it was neither a federal car nor a British one, and Miles's figures belong to that car alone. He printed the power British Leyland quoted then for the federal carburettor engine, which the comparison keeps apart from the injected car's ratings, and the maximum speed Triumph had computed for it. The comparison's coupé column, with its notes, gives the car's weight and brakes.

Item	Reading
Weight on the front wheels	56%
From rest to 161 km/h (100 mph)	32.8 seconds
Standing kilometre	31.8 seconds, at 159 km/h (99 mph)
Speed per 1,000 rpm	42.3 km/h (26.3 mph) in fifth; 35.2 km/h (21.9 mph) in fourth
Fuel economy	"slightly over 17 mpg for the day" (imperial)

The road tests tell what Miles thought of it.⁠source 9source 14

Contents

Production

Sources for Production, by version

Price new: Coupe: One good source.Suggested retail price for the coupe, May 1980. Michael Lamm, "1st Drive in the Triumph TR8", British Car, Feb–Mar 1999, pp. 46–48⁠source 16; 49-State: Several figures in print.Jaguar Rover Triumph Inc. (via triumphtr8.com), Window labels (suggested retail price and EPA economy) of a 1980 TR8 convertible (49-state, carburettor) and a 1981 TR8 (injected), 1980⁠source 17; Michael Lamm, "1st Drive in the Triumph TR8", British Car, Feb–Mar 1999, pp. 46–48⁠source 16; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (via triumphtr8.com), Window labels (suggested retail price and EPA economy) of a 1980 TR8 convertible (49-state, carburettor) and a 1981 TR8 (injected), 1980⁠source 17; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Don Green, "Triumph TR8: a 20,000-mile durability run", Motor Trend (probably: not printed on the scans), 1980 or 1981⁠source 18; Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11
Built: Coupe: Several figures in print.Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 19; Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11; 49-State: Several figures in print.Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 19; triumphtr8.com, Variant pages (group): "FHC TR8 (ACN) 1977", "FHC TR8 (TCN) 1978–1979", "TR8 (TCV) 1979 DHC", "TR8 (TP) 1980", "DHC TR8 (SAT) 1981/82"⁠source 20; Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11; James TenCate, "Production Numbers – A Detective Story", TR Driver (TR Drivers Club), 2012 no. 2⁠source 10; Fuel Injection: Several figures in print.James TenCate, "Production Numbers – A Detective Story", TR Driver (TR Drivers Club), 2012 no. 2⁠source 10; triumphtr8.com, "Production Figures for the TR8", 5 Jan 2026⁠source 21; California Air Resources Board (via the Triumph Wedge Owners Association), California Air Resources Board executive orders A-5-47 (1979 model year), A-5-49 (1980) and A-220-5 (1981), with supplemental data sheets, 22 Feb 1979; 18 Mar 1980; Mar 1981⁠source 6; UK RHD: One good source.Build records; project approved end March 1980. triumphtr8.com, "Right hand drive TR8 Home Market UK" and "TR8 RHD Production Story", modified 23 May 2026⁠source 22
Designers: Coupe: Several figures in print.Rex Holford, "A Brief History of the TR8", TR Drivers Club⁠source 23; Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11; 49-State: Several figures in print.Rex Holford, "A Brief History of the TR8", TR Drivers Club⁠source 23; Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11; Fuel Injection: Several figures in print.Rex Holford, "A Brief History of the TR8", TR Drivers Club⁠source 23; Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11; UK RHD: Several figures in print.Rex Holford, "A Brief History of the TR8", TR Drivers Club⁠source 23; Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11
Built at: Coupe: Several figures in print.Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 19; triumphtr8.com, Variant pages (group): "FHC TR8 (ACN) 1977", "FHC TR8 (TCN) 1978–1979", "TR8 (TCV) 1979 DHC", "TR8 (TP) 1980", "DHC TR8 (SAT) 1981/82"⁠source 20; 49-State: One good source.Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 19; Fuel Injection: One good source.Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 19; UK RHD: One good source.triumphtr8.com, "Right hand drive TR8 Home Market UK" and "TR8 RHD Production Story", modified 23 May 2026⁠source 22

Production, by version
Item	Coupe	49-State	Fuel Injection	UK RHD
Price new	$11,150	$11,900 Price new, 49-State Several figures in print. $11,900Good sources agree: Jaguar Rover Triumph Inc. (via triumphtr8.com), Window labels (suggested retail price and EPA economy) of a 1980 TR8 convertible (49-state, carburettor) and a 1981 TR8 (injected), 1980, 1980 49-state convertible, manufacturer's suggested retail price P.O.E.⁠source 17; Michael Lamm, "1st Drive in the Triumph TR8", British Car, Feb–Mar 1999, pp. 46–48, suggested retail price for the roadster, May 1980⁠source 16 $11,500 (est.)One good source: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, estimate before prices were set, June 1980⁠source 2	$12,995 Price new, Fuel Injection Several figures in print. $12,995One good source: Jaguar Rover Triumph Inc. (via triumphtr8.com), Window labels (suggested retail price and EPA economy) of a 1980 TR8 convertible (49-state, carburettor) and a 1981 TR8 (injected), 1980, 1981, manufacturer's suggested retail price P.O.E.⁠source 17 $12,325One good source: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40, as tested, 1980⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, as tested, 1980⁠source 5 just over $13,000One good source: Don Green, "Triumph TR8: a 20,000-mile durability run", Motor Trend (probably: not printed on the scans), 1980 or 1981, with air conditioning⁠source 18 over $14,000One good source: Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17, 1981, fully equipped⁠source 11	Not in the sources read
Built	February-October 1977 (Speke, ACN), then Canley 1978-79 (TCN) Built, Coupe Several figures in print. February-October 1977 (Speke, ACN), then Canley 1978-79 (TCN)Good sources agree: Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016), built⁠source 19 1977 (Speke), shipped as 1978 carsGood sources agree: Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17, built⁠source 11	1979 (first TCV convertibles) to August 1980 (Canley car assembly ended) Built, 49-State Several figures in print. 1979 (first TCV convertibles) to August 1980 (Canley car assembly ended)One good source: Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016), Canley⁠source 19 TCV 1979 MY, then TP 1980 MY, CanleyOne good source: triumphtr8.com, Variant pages (group): "FHC TR8 (ACN) 1977", "FHC TR8 (TCN) 1978–1979", "TR8 (TCV) 1979 DHC", "TR8 (TP) 1980", "DHC TR8 (SAT) 1981/82"⁠source 20 to the 1980 model yearGood sources agree: Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17, North America; the 1981 cars were all fuel-injected⁠source 11; James TenCate, "Production Numbers – A Detective Story", TR Driver (TR Drivers Club), 2012 no. 2, North America; the 1981 cars were all fuel-injected⁠source 10	1980 (California, 1980 MY) to October 1981 (engine 14E00799 in a car built 12 Oct 1981) Built, Fuel Injection Several figures in print. 1980 (California, 1980 MY) to October 1981 (engine 14E00799 in a car built 12 Oct 1981)Good sources agree: James TenCate, "Production Numbers – A Detective Story", TR Driver (TR Drivers Club), 2012 no. 2⁠source 10 October 1981 (408533 built 12 Oct 1981; 408405 finished 20 Oct 1981)Good sources agree: triumphtr8.com, "Production Figures for the TR8", 5 Jan 2026, last cars⁠source 21 1980 model year: injected California TR8 certified 18 March 1980One good source: California Air Resources Board (via the Triumph Wedge Owners Association), California Air Resources Board executive orders A-5-47 (1979 model year), A-5-49 (1980) and A-220-5 (1981), with supplemental data sheets, 22 Feb 1979; 18 Mar 1980; Mar 1981, order A-5-49⁠source 6	April 1980 to 31 March 1981
Designers	Harris Mann (styling of the TR7/TR8 body) Designers, Coupe Several figures in print. Harris Mann (styling of the TR7/TR8 body)Good sources agree: Rex Holford, "A Brief History of the TR8", TR Drivers Club⁠source 23 Harris Mann (styling)Good sources agree: Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11	Harris Mann (styling of the TR7/TR8 body) Designers, 49-State Several figures in print. Harris Mann (styling of the TR7/TR8 body)Good sources agree: Rex Holford, "A Brief History of the TR8", TR Drivers Club⁠source 23 Harris Mann (styling)Good sources agree: Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11	Harris Mann (styling of the TR7/TR8 body) Designers, Fuel Injection Several figures in print. Harris Mann (styling of the TR7/TR8 body)Good sources agree: Rex Holford, "A Brief History of the TR8", TR Drivers Club⁠source 23 Harris Mann (styling)Good sources agree: Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11	Harris Mann (styling of the TR7/TR8 body) Designers, UK RHD Several figures in print. Harris Mann (styling of the TR7/TR8 body)Good sources agree: Rex Holford, "A Brief History of the TR8", TR Drivers Club⁠source 23 Harris Mann (styling)Good sources agree: Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11
Built at	Speke (ACN, 1977) and Canley (TCN, 1978-79) Built at, Coupe Several figures in print. Speke (ACN, 1977) and Canley (TCN, 1978-79)One good source: Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 19 Speke (ACN) and Canley (TCN)One good source: triumphtr8.com, Variant pages (group): "FHC TR8 (ACN) 1977", "FHC TR8 (TCN) 1978–1979", "TR8 (TCV) 1979 DHC", "TR8 (TP) 1980", "DHC TR8 (SAT) 1981/82"⁠source 20	Canley (VIN letter T)	Canley (1980 California cars), Solihull (1981 model year)	first batch built at Canley, second at Solihull; chassis numbers carry the Solihull code

Contents

Engine

Sources for Engine, by version

Capacity: Coupe: Good sources agree.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; 49-State: Good sources agree.All. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Good sources agree.All. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; UK RHD: Good sources agree.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2
Engine position: Coupe: Good sources agree.US convertible. Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; 49-State: Good sources agree.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Fuel Injection: Good sources agree.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; UK RHD: Good sources agree.US convertible. Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3
Valve gear: Coupe: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980⁠source 4; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; 49-State: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980⁠source 4; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980⁠source 4; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; UK RHD: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980⁠source 4; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3
Bore × stroke: Coupe: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; 49-State: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; UK RHD: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2
Compression ratio: Coupe: Good sources agree.US coupe, brochure printed 9/77. British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures⁠source 24; John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; 49-State: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; triumphtr8.com, "TR8's Genuine Factory cars: History & Authentication" and "Is it a genuine TR8?", 6 Jun 2026⁠source 12; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; triumphtr8.com, "TR8's Genuine Factory cars: History & Authentication" and "Is it a genuine TR8?", 6 Jun 2026⁠source 12; UK RHD: One good source.20E/21E engines. triumphtr8.com, "TR8's Genuine Factory cars: History & Authentication" and "Is it a genuine TR8?", 6 Jun 2026⁠source 12; R. Hurdwell (BL Motorsport, Abingdon), "TR8 Modifications" (memo, 4 pp.), BL Motorsport (via the Triumph Wedge Owners Association), 16 Dec 1980⁠source 25
Fuel system: Coupe: One good source.US coupe, brochure printed 9/77. British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures⁠source 24; 49-State: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; James TenCate, "Production Numbers – A Detective Story", TR Driver (TR Drivers Club), 2012 no. 2⁠source 10; UK RHD: Several figures in print.James TenCate, "Production Numbers – A Detective Story", TR Driver (TR Drivers Club), 2012 no. 2⁠source 10; triumphtr8.com, "Right hand drive TR8 Home Market UK" and "TR8 RHD Production Story", modified 23 May 2026⁠source 22
Carburettors: Coupe: One good source.US coupe, brochure printed 9/77. British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures⁠source 24; 49-State: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; UK RHD: Several figures in print.triumphtr8.com, "Rover V8", 12 Aug 2026⁠source 26; triumphtr8.com, "TR8's Genuine Factory cars: History & Authentication" and "Is it a genuine TR8?", 6 Jun 2026⁠source 12; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 15
Aspiration: Coupe: One good source.US coupe, brochure printed 9/77. British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures⁠source 24; 49-State: One good source.US 49-state, 1980 MY. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Fuel Injection: One good source.Injected; California 1980 MY. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; UK RHD: One good source.James TenCate, "Production Numbers – A Detective Story", TR Driver (TR Drivers Club), 2012 no. 2⁠source 10
Cycle: Coupe: One good source.US convertible. Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; 49-State: One good source.Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Fuel Injection: One good source.Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; UK RHD: One good source.US convertible. Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3

Engine, by version
Item	Coupe	49-State	Fuel Injection	UK RHD
Capacity	3528 cc	3528 cc	3528 cc	3528 cc
Engine position	Front	Front	Front	Front
Valve gear	overhead valve Valve gear, Coupe Several figures in print. overhead valveGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, US convertible⁠source 1 hydraulic valve liftersGood sources agree: Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980, US convertible⁠source 4 pushrods, overhead valves, hydraulic liftersGood sources agree: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40, US convertible⁠source 3	overhead valve Valve gear, 49-State Several figures in print. overhead valveGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1 hydraulic valve liftersGood sources agree: Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980⁠source 4 pushrods, overhead valves, hydraulic liftersGood sources agree: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3	overhead valve Valve gear, Fuel Injection Several figures in print. overhead valveGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1 hydraulic valve liftersGood sources agree: Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980⁠source 4 pushrods, overhead valves, hydraulic liftersGood sources agree: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3	overhead valve Valve gear, UK RHD Several figures in print. overhead valveGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, US convertible⁠source 1 hydraulic valve liftersGood sources agree: Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980, US convertible⁠source 4 pushrods, overhead valves, hydraulic liftersGood sources agree: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40, US convertible⁠source 3
Bore × stroke	88.9 x 71.1 mm (3.50 x 2.80 in) Bore × stroke, Coupe Several figures in print. 88.9 x 71.1 mm (3.50 x 2.80 in)Good sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, US convertible⁠source 1 88.9 x 71.1 mmGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, US convertible⁠source 2	88.9 x 71.1 mm (3.50 x 2.80 in) Bore × stroke, 49-State Several figures in print. 88.9 x 71.1 mm (3.50 x 2.80 in)Good sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, all⁠source 1 88.9 x 71.1 mmGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, all⁠source 2	88.9 x 71.1 mm (3.50 x 2.80 in) Bore × stroke, Fuel Injection Several figures in print. 88.9 x 71.1 mm (3.50 x 2.80 in)Good sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, all⁠source 1 88.9 x 71.1 mmGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, all⁠source 2	88.9 x 71.1 mm (3.50 x 2.80 in) Bore × stroke, UK RHD Several figures in print. 88.9 x 71.1 mm (3.50 x 2.80 in)Good sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, US convertible⁠source 1 88.9 x 71.1 mmGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, US convertible⁠source 2
Compression ratio	8.1:1	8.1:1 Compression ratio, 49-State Several figures in print. 8.1:1Good sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, North America⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, North America⁠source 2 8.13:1One good source: triumphtr8.com, "TR8's Genuine Factory cars: History & Authentication" and "Is it a genuine TR8?", 6 Jun 2026, North America, engine-number list⁠source 12	8.1:1 Compression ratio, Fuel Injection Several figures in print. 8.1:1Good sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, North America⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, North America⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3 8.13:1One good source: triumphtr8.com, "TR8's Genuine Factory cars: History & Authentication" and "Is it a genuine TR8?", 6 Jun 2026, North America, engine-number list⁠source 12	9.35:1
Fuel system	twin Zenith 1.75 CDSET carburettors	Carburetor Fuel system, 49-State Several figures in print. CarburetorGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, US 49-state, 1980 MY⁠source 1 a pair of Stromberg carburettorsGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, "the rest of the country"⁠source 2	Lucas/Bosch L-Jetronic electronic injection, closed loop Fuel system, Fuel Injection Several figures in print. Lucas/Bosch L-Jetronic electronic injection, closed loopGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, injected; California 1980 MY⁠source 1 Lucas/Bosch L-Jetronic fuel injection with a 3-way catalystGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, injected; California 1980 MY⁠source 2 fuel injectionGood sources agree: James TenCate, "Production Numbers – A Detective Story", TR Driver (TR Drivers Club), 2012 no. 2, 1981 MY, every car outside the UK⁠source 10	carburettors Fuel system, UK RHD Several figures in print. carburettorsGood sources agree: James TenCate, "Production Numbers – A Detective Story", TR Driver (TR Drivers Club), 2012 no. 2⁠source 10 carburettors, no injectionGood sources agree: triumphtr8.com, "Right hand drive TR8 Home Market UK" and "TR8 RHD Production Story", modified 23 May 2026⁠source 22
Carburettors	Zenith 1.75 CDSET	twin Zenith-Stromberg 175CDSET carbs on 49-state cars Carburettors, 49-State Several figures in print. twin Zenith-Stromberg 175CDSET carbs on 49-state carsGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, US 49-state, 1980 MY⁠source 5 twin Zenith 1.75 CDSETGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, US 49-state, 1980 MY⁠source 1 StrombergGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, US 49-state, 1980 MY⁠source 2	Not in the sources read	Zenith-Stromberg Carburettors, UK RHD Several figures in print. Zenith-StrombergOne good source: triumphtr8.com, "Rover V8", 12 Aug 2026⁠source 26; triumphtr8.com, "TR8's Genuine Factory cars: History & Authentication" and "Is it a genuine TR8?", 6 Jun 2026⁠source 12 twin SUNot yet confirmed: Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5, non-US TR8s; no source given in the passage⁠source 15
Aspiration	Naturally Aspirated	Naturally Aspirated	Naturally Aspirated	Naturally Aspirated
Cycle	Four-stroke	Four-stroke	Four-stroke	Four-stroke

Contents

Performance

Sources for Performance, by version

Power: Coupe: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; 49-State: Good sources agree.SAE net, at 5,000 rpm; US 49-state, 1980 MY. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Fuel Injection: Good sources disagree.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980⁠source 4; Wikipedia (EN), "Triumph TR8", 2026⁠source 27; UK RHD: Good sources disagree.TR Drivers Club, "Early Cars: TR8" (data panel)⁠source 13; triumphtr8.com, "TR8 How Fast", 10 Feb 2026⁠source 7; triumphtr8.com, Pages (group): "TR8 Press Cars UK", "TR8 Press Articles and Cuttings" (21 Mar 2026), "Classic and Sports Car TR8 Article" (9 Apr 2026), 2026⁠source 14
Torque: Coupe: Good sources disagree.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; 49-State: Good sources disagree.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 15; Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Fuel Injection: Good sources disagree.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 15; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980⁠source 4
Top speed: Coupe: One good source.Triumph's computed maximum speed. John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; Fuel Injection: Several figures in print.Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Don Green, "Triumph TR8: a 20,000-mile durability run", Motor Trend (probably: not printed on the scans), 1980 or 1981⁠source 18; Malcolm Paris (compiler), "Triumph TR7 / TR7 V8 and TR8 Buyers Guide", TR Register⁠source 28; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 15; UK RHD: Several figures in print.triumphtr8.com, "TR8 How Fast", 10 Feb 2026⁠source 7; triumphtr8.com, "Right hand drive TR8 Home Market UK" and "TR8 RHD Production Story", modified 23 May 2026⁠source 22
0–60 mph: Coupe: One good source.A half-federal LHD engineering coupe, catalyst removed. John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; Fuel Injection: Several figures in print.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Malcolm Paris (compiler), "Triumph TR7 / TR7 V8 and TR8 Buyers Guide", TR Register⁠source 28; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980⁠source 4; Michael Lamm, "1st Drive in the Triumph TR8", British Car, Feb–Mar 1999, pp. 46–48⁠source 16
Standing start: Coupe: One good source.Quarter mile at 79 mph; the same coupe. John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; 49-State: One good source.Quarter mile at 83 mph; the 49-state figure C&D quotes. Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Fuel Injection: Several figures in print.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980⁠source 4

Performance, by version
Item	Coupe	49-State	Fuel Injection	UK RHD
Power	133 bhp Power, Coupe Several figures in print. 133 bhpGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, SAE net, at 5,000 rpm; 1980 49-state convertible⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, SAE net, at 5,000 rpm; 1980 49-state convertible⁠source 2 137 bhpOne good source: John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com), "In federal form", at 5,000 rpm; 1979 carburettor engine as BL quoted it then⁠source 9	133 bhp	148 bhp Power, Fuel Injection Good sources disagree. 148 bhpDisputed: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, SAE net, at 5,100 rpm; injected; California 1980 MY (JRT brochure)⁠source 1; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40, SAE net, at 5,100 rpm; injected; California 1980 MY (C&D test car)⁠source 3; Wikipedia (EN), "Triumph TR8", 2026, at 5,100 rpm; 1981 North America (R&T 1981 annual, as cited)⁠source 27 137 bhpDisputed: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, SAE net, at 5,000 rpm; injected; California 1980 MY (R&T)⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, SAE net, at 5,000 rpm; injected; California 1980 MY (JRT press data)⁠source 5; Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980, SAE net, at 5,000 rpm; injected; California 1980 MY (JRT press data)⁠source 4	152 bhp Power, UK RHD Good sources disagree. 152 bhpDisputed: TR Drivers Club, "Early Cars: TR8" (data panel), at 4,750 rpm; UK carburettor (unsourced panel)⁠source 13 153 bhpDisputed: triumphtr8.com, "TR8 How Fast", 10 Feb 2026, EXP 923, the MIRA car⁠source 7 155 bhpDisputed: triumphtr8.com, Pages (group): "TR8 Press Cars UK", "TR8 Press Articles and Cuttings" (21 Mar 2026), "Classic and Sports Car TR8 Article" (9 Apr 2026), 2026, "standard ... RHD pre production cars" (Classic & Sports Car, as shown)⁠source 14
Torque	174 lb ft Torque, Coupe Good sources disagree. 174 lb ftDisputed: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, at 3,000 rpm; 1980 49-state convertible⁠source 2 168 lb ftDisputed: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, at 3,000 rpm; 1980 49-state convertible⁠source 1 184 lb ftOne good source: John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com), "In federal form", at 3,000 rpm; 1979⁠source 9	174 lb ft Torque, 49-State Good sources disagree. 174 lb ftDisputed: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, at 3,000 rpm; carburettor⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, at 3,000 rpm, "w/carbs"; JRT press data⁠source 5; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5, carburettor⁠source 15 168 lb ftDisputed: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, at 3,000 rpm; US 49-state, 1980 MY⁠source 1	180 lb ft Torque, Fuel Injection Good sources disagree. 180 lb ftDisputed: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, at 3,250 rpm; injected⁠source 1; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40, at 3,250 rpm; injected⁠source 3; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5, at 3,250 rpm; injected⁠source 15 165 lb ftDisputed: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, at 3,200 rpm; injected⁠source 2 168 lb ftDisputed: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, at 3,250 rpm; injected⁠source 5; Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980, at 3,250 rpm; injected⁠source 4	Not in the sources read
Top speed	about 120 mph	Not in the sources read	117 mph Top speed, Fuel Injection Several figures in print. 117 mphOne good source: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40, measured, fifth gear at 4,750 rpm⁠source 3 120 mphOne good source: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, data panel, fifth at 4,700 rpm⁠source 2; Malcolm Paris (compiler), "Triumph TR7 / TR7 V8 and TR8 Buyers Guide", TR Register, performance table⁠source 28 135 mphOne good source: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, "Our test TR8 reached 135 mph" (text; its own panel gives 120)⁠source 2 130 mphOne good source: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, estimated⁠source 5 123 mphOne good source: Don Green, "Triumph TR8: a 20,000-mile durability run", Motor Trend (probably: not printed on the scans), 1980 or 1981, "made its 123-mph run"; durability-run car⁠source 18 about 125 mphOne good source: Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 15	205 km/h Top speed, UK RHD Several figures in print. 205 km/hOne good source: triumphtr8.com, "TR8 How Fast", 10 Feb 2026, design maximum, UK type approval no. 377, para 8.5 (127 mph)⁠source 7 130.43 mphOne good source: triumphtr8.com, "Right hand drive TR8 Home Market UK" and "TR8 RHD Production Story", modified 23 May 2026, EXP 923, MIRA flying quarter mile, 27 Aug 1981, from Roy Ford's account⁠source 22
0–60 mph	10.4 s	Not in the sources read	8.4 s 0–60 mph, Fuel Injection Several figures in print. 8.4 sGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, injected⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, injected⁠source 5; Malcolm Paris (compiler), "Triumph TR7 / TR7 V8 and TR8 Buyers Guide", TR Register, performance table⁠source 28 8.1 sOne good source: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40, injected⁠source 3 8.5 sOne good source: Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980, injected⁠source 4; Michael Lamm, "1st Drive in the Triumph TR8", British Car, Feb–Mar 1999, pp. 46–48, stopwatch, launch drive (recalled)⁠source 16	Not in the sources read
Standing start	17.5 s	16.7 s	16.3 s Standing start, Fuel Injection Several figures in print. 16.3 sOne good source: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, quarter mile at 85.5 mph⁠source 2 16.2 sOne good source: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40, quarter mile at 87 mph⁠source 3 16.34 sOne good source: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, quarter mile at 85.4 mph⁠source 5 16.6 sOne good source: Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980, quarter mile at 84.2 mph⁠source 4	Not in the sources read

Contents

Running gear

Sources for Running gear, by version

Steering: Coupe: One good source.US-engined coupe, 1979. John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; 49-State: One good source.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; UK RHD: One good source.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1
Gearbox: Coupe: Several figures in print.British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures⁠source 24; John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9
Gears: Coupe: One good source.US-engined coupe, 1979. John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; 49-State: One good source.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Fuel Injection: Good sources agree.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; UK RHD: One good source.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1
Front brakes: Coupe: Several figures in print.British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures⁠source 24; John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; 49-State: One good source.1980. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Michael Lamm, "1st Drive in the Triumph TR8", British Car, Feb–Mar 1999, pp. 46–48⁠source 16; UK RHD: One good source.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1
Rear brakes: Coupe: One good source.US-engined coupe, 1979. John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; 49-State: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; UK RHD: One good source.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1
Front suspension: Coupe: Good sources agree.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; 49-State: Good sources agree.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Good sources agree.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; UK RHD: Good sources agree.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2
Rear suspension: Coupe: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; 49-State: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; UK RHD: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5
Tyres: Coupe: One good source.US-engined coupe, 1979. John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; 49-State: Several figures in print.Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Several figures in print.Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2
Wheels: Coupe: One good source.US-engined coupe, 1979. John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; 49-State: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2
Clutch: 49-State: One good source.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Fuel Injection: One good source.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1

Running gear, by version
Item	Coupe	49-State	Fuel Injection	UK RHD
Steering	2.8 turns lock to lock	power-assisted rack and pinion, 2.8 turns lock to lock	power-assisted rack and pinion, 2.8 turns lock to lock Steering, Fuel Injection Several figures in print. power-assisted rack and pinion, 2.8 turns lock to lockGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1 2.7 turns lock to lockOne good source: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3 2.8 turns lock to lockGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5	rack and pinion
Gearbox	Manual Gearbox, Coupe Several figures in print. ManualOne good source: John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com), US-engined coupe, 1979⁠source 9 Borg-Warner 65 automatic, optionalOne good source: British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures, US coupe, brochure printed 9/77⁠source 24	Not in the sources read	Not in the sources read	Not in the sources read
Gears	5	5	5	5
Front brakes	discs 9.75 in (248 mm) Front brakes, Coupe Several figures in print. discs 9.75 in (248 mm)One good source: British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures, US coupe, brochure printed 9/77⁠source 24 discs nominally 9.6 in, 9/16 in thickOne good source: John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com), US-engined coupe, 1979⁠source 9	solid discs 244 mm (9.61 in), servo	solid discs 244 mm (9.61 in), servo Front brakes, Fuel Injection Several figures in print. solid discs 244 mm (9.61 in), servoOne good source: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, 1980⁠source 1 discs 9.8 in (249 mm)One good source: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2 solid discs 9.5 inOne good source: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40, "thicker by 50 percent" than the TR7's⁠source 3 discs 9.7 inOne good source: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Michael Lamm, "1st Drive in the Triumph TR8", British Car, Feb–Mar 1999, pp. 46–48⁠source 16	solid discs
Rear brakes	drums 9 in (TR7 8 in)	drums 229 mm (9 in) Rear brakes, 49-State Several figures in print. drums 229 mm (9 in)Good sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1 drums 9 inGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2	drums 229 mm (9 in) Rear brakes, Fuel Injection Several figures in print. drums 229 mm (9 in)Good sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1 drums 9 inGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2	drums
Front suspension	MacPherson struts, coil springs, lower arms, anti-roll bar	MacPherson struts, coil springs, lower arms, anti-roll bar	MacPherson struts, coil springs, lower arms, anti-roll bar	MacPherson struts, coil springs, lower arms, anti-roll bar
Rear suspension	live axle on four links, coil springs, tube shocks, anti-roll bar Rear suspension, Coupe Several figures in print. live axle on four links, coil springs, tube shocks, anti-roll barGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, US convertible⁠source 2 live axle on four links, coil springs, anti-roll barGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, US convertible⁠source 1 tube shocksGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, US convertible⁠source 5	live axle on four links, coil springs, tube shocks, anti-roll bar Rear suspension, 49-State Several figures in print. live axle on four links, coil springs, tube shocks, anti-roll barGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2 live axle on four links, coil springs, anti-roll barGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1 tube shocksGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5	live axle on four links, coil springs, tube shocks, anti-roll bar Rear suspension, Fuel Injection Several figures in print. live axle on four links, coil springs, tube shocks, anti-roll barGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2 live axle on four links, coil springs, anti-roll barGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1 tube shocksGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5	live axle on four links, coil springs, tube shocks, anti-roll bar Rear suspension, UK RHD Several figures in print. live axle on four links, coil springs, tube shocks, anti-roll barGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, US convertible⁠source 2 live axle on four links, coil springs, anti-roll barGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, US convertible⁠source 1 tube shocksGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, US convertible⁠source 5
Tyres	185/70 HR-13	185/70 HR 13 Tyres, 49-State Several figures in print. 185/70 HR 13Good sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2 185/70SRx13One good source: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5	185/70 HR 13 Tyres, Fuel Injection Several figures in print. 185/70 HR 13Good sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2 185/70SRx13One good source: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5	Not in the sources read
Wheels	5½J alloy wheels	13 x 5.5J cast alloy Wheels, 49-State Several figures in print. 13 x 5.5J cast alloyGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1 13 x 5.5J alloyGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2	13 x 5.5J cast alloy Wheels, Fuel Injection Several figures in print. 13 x 5.5J cast alloyGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1 13 x 5.5J alloyGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2	Not in the sources read
Clutch	Not in the sources read	diaphragm, 241 mm (9.5 in), hydraulic	diaphragm, 241 mm (9.5 in), hydraulic	Not in the sources read

Contents

Body and chassis

Sources for Body and chassis, by version

Body material: Coupe: Several figures in print.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; 49-State: Several figures in print.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Fuel Injection: Several figures in print.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; UK RHD: Several figures in print.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5
Doors: Coupe: Good sources agree.US convertible. Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; 49-State: Good sources agree.Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Fuel Injection: Good sources agree.Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; UK RHD: Good sources agree.US convertible. Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5
Seats: Coupe: Good sources agree.US convertible. Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5
Chassis material: Coupe: Several figures in print.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; 49-State: Several figures in print.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Fuel Injection: Several figures in print.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; UK RHD: Several figures in print.Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5

Body and chassis, by version
Item	Coupe	49-State	Fuel Injection	UK RHD
Body material	unit steel Body material, Coupe Several figures in print. unit steelGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, US convertible⁠source 2 Unitary, steel bodyGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, US convertible⁠source 5	unit steel Body material, 49-State Several figures in print. unit steelGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2 Unitary, steel bodyGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5	unit steel Body material, Fuel Injection Several figures in print. unit steelGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2 Unitary, steel bodyGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5	unit steel Body material, UK RHD Several figures in print. unit steelGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, US convertible⁠source 2 Unitary, steel bodyGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, US convertible⁠source 5
Doors	2	2	2	2
Seats	2	Not in the sources read	Not in the sources read	Not in the sources read
Chassis material	unit steel Chassis material, Coupe Several figures in print. unit steelGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, US convertible⁠source 2 Unitary, steel bodyGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, US convertible⁠source 5	unit steel Chassis material, 49-State Several figures in print. unit steelGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2 Unitary, steel bodyGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5	unit steel Chassis material, Fuel Injection Several figures in print. unit steelGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2 Unitary, steel bodyGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5	unit steel Chassis material, UK RHD Several figures in print. unit steelGood sources agree: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, US convertible⁠source 2 Unitary, steel bodyGood sources agree: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, US convertible⁠source 5

Contents

Dimensions and weight

Sources for Dimensions and weight, by version

Length: Coupe: One good source.US coupe, brochure printed 9/77 (4,173 mm). British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures⁠source 24; 49-State: Good sources agree.US convertible (4,201 mm). Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5
Width: Coupe: Good sources agree.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; 49-State: Good sources agree.1,681 mm. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Good sources agree.1,681 mm. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; UK RHD: Good sources agree.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2
Height: Coupe: One good source.US coupe, brochure printed 9/77 (1,267 mm). British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures⁠source 24; 49-State: Good sources agree.Hood up (1,257 mm). Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Several figures in print.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11
Kerb weight: Coupe: Good sources disagree.British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures⁠source 24; John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com)⁠source 9; 49-State: Good sources disagree.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Fuel Injection: Good sources disagree.Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 15; Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11
Wheelbase: Coupe: Good sources agree.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; 49-State: Good sources agree.2,159 mm. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Good sources agree.2,159 mm. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; UK RHD: Good sources agree.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2
Ground clearance: 49-State: Several figures in print.Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Fuel Injection: Several figures in print.Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3
Fuel tank: Coupe: One good source.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; 49-State: One good source.55.3 L. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Fuel Injection: Good sources agree.55.3 L. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; UK RHD: One good source.US convertible. Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980⁠source 1

Dimensions and weight, by version
Item	Coupe	49-State	Fuel Injection	UK RHD
Length	164.3 in	165.4 in	165.4 in Length, Fuel Injection Several figures in print. 165.4 inGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, US convertible (4,201 mm)⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2 165.5 inGood sources agree: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5	Not in the sources read
Width	66.2 in	66.2 in	66.2 in	66.2 in
Height	49.9 in	49.5 in	49.5 in Height, Fuel Injection Several figures in print. 49.5 inGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, hood up (1,257 mm)⁠source 1; Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79⁠source 2 49.2 inOne good source: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3 48.5 inOne good source: Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17⁠source 11	Not in the sources read
Kerb weight	2660 lb Kerb weight, Coupe Good sources disagree. 2660 lbDisputed: British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures, US coupe, brochure printed 9/77, five-speed (1,207 kg)⁠source 24 2645 lbDisputed: British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures, US coupe, brochure printed 9/77, automatic (1,200 kg)⁠source 24 23.7 cwt (1,204 kg)Disputed: John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com), US-engined coupe, 1979⁠source 9	2677 lb Kerb weight, 49-State Good sources disagree. 2677 lbDisputed: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, US 1980, brochure (1,214 kg)⁠source 1 2662 lbDisputed: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, carburettor; JRT press data⁠source 5	2677 lb Kerb weight, Fuel Injection Good sources disagree. 2677 lbDisputed: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, US 1980, brochure (1,214 kg)⁠source 1; Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17, 1981 (same as the brochure)⁠source 11 2655 lbDisputed: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, injected test car⁠source 2 2620 lbDisputed: Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40, injected test car⁠source 3 2650 lbDisputed: Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, injected; JRT press data⁠source 5 2660 lbDisputed: Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5, convertible⁠source 15	Not in the sources read
Wheelbase	85.0 in	85.0 in	85.0 in	85.0 in
Ground clearance	Not in the sources read	3.6 in Ground clearance, 49-State Several figures in print. 3.6 inGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, 91 mm⁠source 1; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5 3.5 inOne good source: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, 89 mm⁠source 2	3.6 in Ground clearance, Fuel Injection Several figures in print. 3.6 inGood sources agree: Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, 91 mm⁠source 1; Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86⁠source 5; Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40⁠source 3 3.5 inOne good source: Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, 89 mm⁠source 2	Not in the sources read
Fuel tank	14.6 US gal	14.6 US gal	14.6 US gal	14.6 US gal

Contents

Sources

Sources are given as plain text; their addresses are on the sources page.

Primarymade at the time, by the maker or by people who were there
Referenceserious later work: clubs, specialists, magazines, books
Uncheckedencyclopaedias and enthusiast sites: cited beside a good source, named in the sentence, or marked Unchecked

Jaguar Rover Triumph Inc. (Leonia, N.J.), Triumph TR8 (sales brochure), USA, printed 4/80, 1980, specification panel, printed "4/80"; Engine: carburettors, automatic choke, "dual catalytic converters", Delco fuel pump; Engine: "California specifications, when different, are noted in brackets"; Steering, Brakes, Exterior and Interior dimensions, Capacities, Electrical; 4/80 brochure, Engine; 4/80 brochure, Engine (bracketed California figure); 4/80 brochure, Steering; 4/80 brochure, Drive train; 4/80 brochure, Brakes; 4/80 brochure, Suspension; 4/80 brochure, Wheels and tyres; 4/80 brochure, Exterior dimensions. Primary
Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, data panels, pp. 77, 79; p. 77, the carburettor engine; EPA highway figure; data panels: acceleration, braking, slalom, lateral acceleration, speedometer error, economy; p. 77, the injection; data panel p. 79: turning circle, track, trunk, tyres, fuel tank, overall gearing; June 1980, data panel; June 1980, data panel p. 79 (Chassis & Body); June 1980, p. 77; June 1980, p. 77 and data panel. Primary
Don Sherman, "Triumph TR8" (road test), Car and Driver, Aug 1980, pp. 36–40, data panel, p. 40; data panel, p. 40; p. 38, "fifteen less horsepower"; braking; weight distribution; data panel: tyres, overall gearing; p. 38, the discs; Aug 1980, data panel; Aug 1980, data panel p. 40 (Vehicle type); Aug 1980, data panel p. 40; Aug 1980, p. 38; Aug 1980, data panel and text. Primary
Fred M. H. Gregory, "TR8 V-8: A mighty Triumph" (road test), with the sidebar "A String of Triumphs", Motor Trend, Jun 1980, data; data: the carburettor engine's torque; data: braking; economy on the loop; data: tyres, trunk; June 1980, text; June 1980, data. Primary
Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, data box, p. 86; data box p. 86: EPA 14/22 mpg w/carbs; data box p. 86: EPA 16/26; 23.7 mpg over 2,973 miles; July 1980, data box p. 86. Primary
California Air Resources Board (via the Triumph Wedge Owners Association), California Air Resources Board executive orders A-5-47 (1979 model year), A-5-49 (1980) and A-220-5 (1981), with supplemental data sheets, 22 Feb 1979; 18 Mar 1980; Mar 1981, A-5-47: air injection, EGR, oxidation catalyst; A-5-49: three-way catalyst, closed loop; A-220-5, engine family BJR215V5FA7; A-5-49 p. 1. Primary
triumphtr8.com, "TR8 How Fast", 10 Feb 2026, the Lucas engineer; speedometers "10–15 mph" optimistic; gearing table, from 402027; the MIRA car; type approval no. 377; stability. Reference
Thos L. Bryant, "New from Britain: Triumph TR7 Convertible & TR8", Road & Track (reprinted by the TR Drivers Club), 1979, TR8 section: the GM Saginaw pump, the Adwest rack. Primary
John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com), p. 2, the discs; overall gearing; p. 2, the British-specification Rover 3.5; pp. 1–2 and the performance table; p. 2; acceleration table. Primary
James TenCate, "Production Numbers – A Detective Story", TR Driver (TR Drivers Club), 2012 no. 2, para. 3, the 1981 cars injected; text; engine numbers. Reference
Michael L. Cook, "1981 Triumph TR8: Fast and Last", Special Interest Autos, no. 156, Nov–Dec 1996, pp. 10–17, p. 14, the 1981 panel; p. 14; p. 13; pp. 10-17, text. Reference
triumphtr8.com, "TR8's Genuine Factory cars: History & Authentication" and "Is it a genuine TR8?", 6 Jun 2026, engine numbers 20E and 21E; the UK chassis plate; engine numbers. Reference
TR Drivers Club, "Early Cars: TR8" (data panel), data panel. Reference
triumphtr8.com, Pages (group): "TR8 Press Cars UK", "TR8 Press Articles and Cuttings" (21 Mar 2026), "Classic and Sports Car TR8 Article" (9 Apr 2026), 2026, Classic and Sports Car TR8 Article; TR8 Press Cars UK; Classic and Sports Car TR8 Article, reaction. Reference
Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5, p. 4, non-US TR8s "as in the Rover 3500"; p. 4; p. 4, caption. Reference
Michael Lamm, "1st Drive in the Triumph TR8", British Car, Feb–Mar 1999, pp. 46–48, p. 48; p. 47. Reference
Jaguar Rover Triumph Inc. (via triumphtr8.com), Window labels (suggested retail price and EPA economy) of a 1980 TR8 convertible (49-state, carburettor) and a 1981 TR8 (injected), 1980, 1980 window label; 1981 window label. Primary
Don Green, "Triumph TR8: a 20,000-mile durability run", Motor Trend (probably: not printed on the scans), 1980 or 1981, p. 5; text (pp. 1, 2, 5 read). Primary
Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016), Speke and Canley sections; 1978-79 and 1979-80 sections; 1979-80 section; 1979-80 and 1980-81 sections. Reference
triumphtr8.com, Variant pages (group): "FHC TR8 (ACN) 1977", "FHC TR8 (TCN) 1978–1979", "TR8 (TCV) 1979 DHC", "TR8 (TP) 1980", "DHC TR8 (SAT) 1981/82", TCV and TP pages; ACN and TCN pages. Reference
triumphtr8.com, "Production Figures for the TR8", 5 Jan 2026, production page. Reference
triumphtr8.com, "Right hand drive TR8 Home Market UK" and "TR8 RHD Production Story", modified 23 May 2026, RHD project production planning; RHD production story; Home Market page; April 1980 section. Reference
Rex Holford, "A Brief History of the TR8", TR Drivers Club, brief history. Reference
British Leyland Motors Inc. / Jaguar Rover Triumph (via triumphtr8.com), TR8 documents (group): handbooks AKM4335 and AKM4779, workshop and injection guides, parts books, and two sales brochures, TR8 coupe brochure "200M 9/77", specification panel. Primary
R. Hurdwell (BL Motorsport, Abingdon), "TR8 Modifications" (memo, 4 pp.), BL Motorsport (via the Triumph Wedge Owners Association), 16 Dec 1980, memo item 1. Primary
triumphtr8.com, "Rover V8", 12 Aug 2026, engine-number list. Reference
Wikipedia (EN), "Triumph TR8", 2026, description. Unchecked
Malcolm Paris (compiler), "Triumph TR7 / TR7 V8 and TR8 Buyers Guide", TR Register, performance data. Reference

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