The A4 DTM – bearing the internal designation “R12” – presented by Audi last year was a completely new vehicle which – partially due to the model change in production – had little in common with the champion’s car from the 2004 season. The 2006 Audi A4 DTM model, on the other hand, hardly seems to differ from its predecessor at first glance. That is why it was not given a new project number but designated “R12 plus” internally. The fact that, compared to last year, the A4 DTM has been subject to changes in merely a few details is a consequence of the regulations. To save unnecessary development costs, the technology – for the first time in the DTM’s 22-year history – was almost completely frozen.
Technical data
Chassis
Tubular space frame, integrated CFK safety cell for the driver, CFK crash elements front and rear
Engine
Normally aspirated V8 engine, 90 degree cylinder angle, 4 valves per cylinder, to comply with rules 2 x 28.0 mm air restrictors
Engine
management system Bosch MS 2.9
Lubrication system
Dry sump
Cubic capacity
4000 cc
Power
about 460 hp
Torque
over 500 Nm
Drive
Rear wheel drive
Clutch
3-discs CFK clutch
Gearbox
Sequential 6-speed racing gearbox
Differential
Multiple-disc limited-slip differential, adjustable
Drive shafts
Constant velocity tripod plunge-joint driveshafts
Steering
Rack-and-pinion power steering
Suspension
Independent suspension at front and rear, doublewishbone suspension, pushrod system with damper/spring unit, adjustable gas-filled shock absorbers
Brakes
Hydraulic dual-circuit brake system, light-alloy brake calipers, ventilated carbon fibre discs at front and rear, brake balance adjustable by driver
Wheels
O.Z. forged aluminium rims, front: 10 x 18 inches, rear: 11 x 18 inches
Tyres
Dunlop radial, front: 265/660-R18, rear: 280/660-R18
Length
4800 mm
Width
1850 mm
Height
1200 mm
Minimum weight
1070 kgs / 1060 kgs / 1020 kgs (A4 DTM 2006 / 2005 / 2004)
Fuel tank capacity
70 ltrs
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