2001-2005 Audi R8

Images copyright Olivier Trocherie, Phil CK, Greg Cooper, Juha Kivekas, Lorens Lin, Patrick Michl, Malcolm Strachan, Audi Sport Press and Michael J. Fuller
Text copyright Michael J. Fuller
The Audi R8 evolved subtly between 2001 and 2005, and mostly in response to changing regulations aimed at reducing downforce and power.  In spite of all of this, the Audi R8 remained dominant during this time period.
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2001-2005 Audi R8 Specifications
Designer: Aerodynamics: Michael Pfadenhauer
Chassis:  Wolfgang Appel
Engine:  Ulrich Baretzky
Layout: Mid-engine, rear-wheel drive
Monocoque: Carbon fiber and aluminum honeycomb monocoque
Engine: 3600 cc V8, turbo-charged, 90 degree cylinder angle, 4 valves per cylinder, 2 Garrett turbo-chargers; to comply with the rules 2 x air restrictors (size dependant on year), and boost pressure restriction to 1.67 bars (absolute), direct fuel injection, FSI
Engine management: Bosch MS 2.8 ('03)
Bosch MS 2.9 ('04)
Engine lubrication: Dry sump, Shell Racing Oil SR
Horsepower: 625 hp ('01-'02)
550 hp ('03)
550+ hp ('04)
520 hp ('05)
Torque: 553 lb-ft. @ 5500 rpm ('01-'02)
516+ lb-ft. ('04)
516 lb-ft. ('05)
Gearbox: Sequential 6-speed sports gearbox built by Ricardo
Clutch: CFC clutch
Differential: Multiple-disc limited slip differential
Driveshafts: Constant-velocity plunging tripod joint
Steering: Power-assisted rack-and-pinion steering
Suspension: Independent suspension at front and rear. Double-wishbone suspension. Pushrod system with vertically mounted spring/damper unit, adjustable gas-filled shock absorbers
Brakes: Hydraulic dual-circuit brake system, monobloc light-alloy brake calipers, ventilated carbon fiber brake discs at front and rear, brake force distribution, driver adjustable
Wheels: O.Z. forged magnesium rims
Front: 13.5 x 18 inches
Rear: 14.5 x 18 inches
Tires: Michelin Radial
Front: 33/65-18
Rear: 36/71-18
Length: 4640 mm
Width: 2000 mm
Wheelbase: 2740 mm
Front Overhang: 900 mm
Rear Overhang: 1010 mm
Weights: 911 kgs (2001 Le Mans average)
909 kgs (2002 Le Mans average)
919 kgs (2003 Le Mans average)
911 kgs (2004 Le Mans average)
957 kgs (2005 Le Mans average)*

*regulations change, minimum weight increased to 950 kgs for hybrid LMP900s in 2005

Tank capacity: 90 liters ('01-'03)
80 liters ('04-'05)*

*regulations change, starting in 2004 the fuel tank capacity for LMP900s was reduced to 80 liters

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ęCopyright 2005, Michael J. Fuller