Competitors' benchmark The Audi R8

Competitors' benchmark The Audi R8
The three Audi R8 sports cars for the 2005 Le Mans 24 Hours
   
 The FSI engine of the Infineon Audi R8

Staying power

The Audi R8 has real staying power – and not only because of its proverbial reliability: 2005 is already the sixth season for the most successful Le Mans Prototype ever.

New regulations in LMES

It will, quite literally, be tough going for the R8, at least in the Le Mans Endurance Series (LMES) and at the 24 Hours of Le Mans: The R8 must start with 50 kilograms more ballast than before (950 instead of 900 kilograms). Furthermore, the European regulations stipulate an even smaller engine air intake restrictor than in the previous year. The power of the turbo FSI engine dropped to approximately 520 horsepower. To compare: In March 2000 the Audi R8 made its debut in Sebring with well in excess of 600 hp.

The V8 power plant's engine electronics were adapted to suit the smaller restrictors by Audi Sport in Ingolstadt and Neckarsulm. No additional modifications are planned for the R8 prototype's final race season. β€œThe aerodynamic configuration, as it was driven in Le Mans last year, has proven to be the optimum for the current regulations,” explains Wolfgang Appel, Head of Vehicle Technology at Audi Sport.

In the American Le Mans Series (ALMS) the R8 can compete with the same weight and engine power as last year.

Technical Data Audi R8 (2005)

Engine type

Cylinders

Valves

Displacements

Power



Torque

Transmission

Gearbox

Suspension




Brakes

Wheels




Tyres



Monocoque

Length

Width

Height

Minimum weight



Fuel capacity
FSI-twin-turbomotor

V8

4 per cylinder

3600 cc

520 hp (Le Mans/LMES), 550 hp (ALMS)

more than 700 Nm

rear wheel drive

6-speed, sequential

independent suspension, double wishbones, pushrod systems

carbon fibre

magnesium, front 13,5 x 18 inches, rear 14,5 x 18 inches

Michelin, front 33/65-18, rear 37/71-18

carbon fibre

4650 mm

2000 mm

1080 mm

950 kgs (Le Mans/LMES),
900 kgs (ALMS)

80 litres (Le Mans/LMES),
90 litres (ALMS)

The car to beat

In 2004 the R8 won 13-times in 14 races and is also considered the sportscar to beat in the 2005 season.