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Audi A5 DTM

The Audi A5 DTM (also known as Audi RS5 DTM) is a Touring Car (DTM) racing car constructed by the German car manufacturer Audi AG. It was developed for use in the 2012-present seasons. It was designed by former Audi Head of Research and Development Wolfgang Dürheimer. It was the developed version of the Audi A5 DTM who replaced retired Audi A4 DTM at the end of 2011 season and based as Audi A5 car.
Audi A5 DTM R17 (2012)
Audi RS5 DTM R17 (2013)
Audi RS5 DTM RC3 (2014-present)
Category
Deutsche Tourenwagen Masters (Touring Cars)
Constructor
Germany Audi
Designer(s)
Wolfgang Dürheimer
Predecessor
Audi A4 DTM
Technical specifications
Chassis
Directly connected to the carbon fibre monocoque is a roll cage of high-strength steel, CFRP monocoque with integrated fuel tank, CFRP crash elements on the side, front and rear
Suspension (front)
Eibach Springs independent suspension front and rear, doublewishbone suspension, pushrod system with spring-damper unit, adjustable gas pressure dampers
Suspension (rear)
Eibach Springs independent suspension front and rear, doublewishbone suspension, pushrod system with spring-damper unit, adjustable gas pressure dampers
Length
4,650 mm (183 in) excluding rear wing
5,010 mm (197 in) including rear wing
Width
1,950 mm (77 in)
Height
1,150 mm (45 in) measured from identical reference plane
Axle track
Front: 1,645 mm (65 in)
Rear: 1,620 mm (64 in)
Max: 1,950 mm (77 in)
Wheelbase
2,750 mm (108 in)
Engine
Custom-built Audi 4,000 cc (4.0 L; 244.1 cu in) V8 90° cylinder angle, 32-valve, 2xDOHC, four valves per cylinder, air restricted to 2 x 28 mm by regulations, naturally aspirated (no Turbocharger), front engined, longitudinally mounted
Transmission
Hewland 6-speed sequential semi-automatic sport gearbox paddle shift, adjustable multi-plate limited-slip differential
Power
Approx. 460 hp (343 kW; 466 PS) @ 7500 rpm
Weight
1,110 kg (2,447 lb) (including driver)
Fuel
Aral Ultimate 102 RON
Lubricants
Castrol
Tyres
Hankook Ventus
Front: 300/680 - R18
Rear: 320/710 - R18
O.Z. Racing forged aluminium wheels
Front: 12 x 18 inches
Rear: 13 x 18 inches
Competition history
Notable entrants
Germany Team Rosberg
Germany Abt Sportsline
Germany Phoenix Racing
Germany Audi Sport Team Abt
Notable drivers
Italy Edoardo Mortara
Portugal Filipe Albuquerque
Sweden Mattias Ekström
United Kingdom Jamie Green
Germany Mike Rockenfeller
Spain Miguel Molina
Germany Timo Scheider
France Adrien Tambay
Switzerland Rahel Frey
Switzerland Nico Müller
Debut
2012 Hockenheimring DTM round
Races
Wins
Poles
Fastest laps
23 (including non-championship race at Olympiastadion Munich)
5
7
3
Constructors' Championships
1 (2013)
Drivers' Championships
1 (2013)

Development and assembly

The first Audi A5 DTM chassis was assembled in June 2011, with the first vehicle completed in August. Codenamed R17, the Audi A5 DTM is a race car designed for the DTM beginning in year 2012, replacing the Audi A4 DTM (required since 2004 season) would be permanently retired after 2011 season. Zylon and Rohacell construction of the sides of the car are in place to absorb side-impact damage from walls, cars, or other obstacles. The fuel tank is also integrated into the carbon fiber monocoque for greater safety and reduced fire risk. Audi A5 DTM was revealed at Frankfurt Motor Showon September 12, 2011. The homologation of the A5 DTM was scheduled for March 1, 2012.
It includes a V8 engine rated at 340 kW (462 PS; 456 hp) with 6-speed transmission (from previous A4 DTM car), pneumatically operated using paddle shifters in the steering wheel, engine electronics (Bosch MS 5.1) and the central display from Audi R8 LMS, larger and wider tires from Hankook, 32-gallons safety fuel tank inside carbon fiber cell, and a larger rear wing. The prototype was built by Audi Sport in Ingolstadt.

Chassis

The Audi A5 DTM was built to supersede the Audi A4 race car, a chassis was made directly connected to the carbon fibre monocoque is a roll cage of high-strength steel; CFRP crash elements on the side, front and rear.

Weight

At the beginning of the 2012 season, homologation rules for DTM cars were changed, an increase in minimum weight from 1,050 kg (2,315 lb) to 1,110 kg (2,447 lb) was mandated.

Engines

Unlike most racing cars competing in the DTM Touring Cars, the RS5 is powered by a Naturally-aspirated engines and 2xDOHC camshafts. The engine itself is a custom-built Audi 4.0 L V8 made of four valves per cylinder, air restricted to 2 x 28 mm by regulations, 90 degree V-angle. Audi RS5 DTM car has power output approximately 500 hp (373 kW; 507 PS) and torque 500 Nm (370 lbft). Audi RS5 DTM's engine position is front engined and longitudinally mounted. Audi RS5 DTM engine is Fuel injected delivery and has 9,000 rpm rev. Audi RS5 DTM's ECU is Bosch Motronic MS 5.1 and other components such as CDI ignition who supplied by Audi/Abt Sportsline.

Debut

The Audi A5 DTM's race debut was at the 2012 Hockenheimring DTM round on April 29, 2012. Audi Sport Team Abt's Mattias Ekström won the pole only.

Teams and drivers

In the 2012 DTM season lined-up eight drivers on for three teams. Mattias Ekström, Timo Scheider, Adrien Tambay and Rahel Frey start for Abt Sportsline. Phoenix Racing approached with Miguel Molina and Mike Rockenfeller. Filipe Albuquerque and Edoardo Mortara raced for Team Rosberg.
In the 2013 DTM season lined-up eight drivers on for four teams. Mattias Ekström and Jamie Green start for Abt Sportsline. Mike Rockenfeller and Miguel Molina for Phoenix Racing. Timo Scheider and Adrien Tambay start for Audi Sport Team Abt. Filipe Albuquerque and Edoardo Mortara start for Team Rosberg.

RS5 DTM

The Audi RS5 DTM is a facelift version of Audi A5 DTM. Still codenamed R17, Audi RS5 DTM was revealed at 2013 International Motor Show at Geneva on March 6, 2013. Like its predecessor, the RS5 uses a Normally-aspirated engine but with a same capacity of 4.0 litres and in a V8 configuration. It is a limited (300 units) version of Audi A5 Coupé for European market, celebrating the success of Audi works driver Mike Rockenfeller winning 2013 DTM season. It included a choice of 4 engines (2.0 TDI quattro (177 PS (130 kW)), 3.0 TDI quattro (245 PS (180 kW)), 2.0 TFSI quattro (225 PS (165 kW)), 3.0 TFSI quattro (272 PS (200 kW))), a choice of 3 body colours (Misano red, Daytona gray and Glacier white), DTM badges on the door sill trims, the fenders and the side sills; fixed rear wing in body color, exterior mirrors in aluminum look, 20-inch cast aluminum wheels in 5 V-spoke design.
The vehicle went on sale in 2013-10-21.
On March 4, 2014, Audi RS5 DTM launched again during 2014 Geneva Motor Show and codenamed as RC3.

Debut

Audi RS5 DTM's first debut during DTM preseason test at Circuit de Catalunya on March 26–28, 2013 by all Audi teams and drivers.
The Audi RS5 DTM's race debut was at the 2013 Hockenheimring DTM round on May 5, 2013. Audi Sport Team Abt's Timo Scheider won the pole only.

Audi RS5 DTM 2013 technical specifications

  • Chassis: Directly connected to the carbon fibre monocoque is a roll cage of high-strength steel, CFRP monocoque with integrated fuel tank, CFRP crash elements on the side, front and rear
  • Engine: Custom-built Audi
  • Engine configuration: V8 engine, 90° cylinder angle
  • Engine type: Naturally aspirated, 32-valve, air restricted to 2 x 28 mm by regulations
  • Valvetrain: 2xDOHC, four valves per cylinder
  • Cubic capacity: Max. 4,000 cc (4.0 L; 244.1 cu in)
  • RPM rev limit: 9000 rpm
  • Power output: Approx. 460 hp (343 kW; 466 PS) @ 7500 rpm
  • Torque: Approx. 500 N·m (370 ft·lbf)
  • Pistons: Mahle
  • Engine management: Bosch Motronic MS 5.1
  • Fuel: Aral Ultimate 102 RON Unleaded
  • Fuel tank capacity: 26.4 imperial gallons (120 litres; 32 US gallons)
  • Fuel delivery: Fuel injection
  • Gearbox: Hewland sequential semi-automatic 6-speed sport gearbox paddle shift with reverse (controlled DTM standard)
  • Clutch: 4-plate ZF CFRP clutch
  • Differential: Adjustable multi-plate limited-slip differential
  • Drivetrain: Rear-wheel drive
  • Drive shafts: Constant-velocity tripod slip-joint shafts
  • Exhaust systems: Akrapovič three-way catalytic converter
  • Filter: Dow Automotive
  • Spark plugs: Bosch
  • Ignition: Bosch CDI
  • Car wiring harness: Bosch
  • Data Logging Systems: Bosch
  • Battery: Bosch 12 volts
  • Lubrication: Castrol dry sump
  • Radiator fluid: Würth
  • Brake fluid: Würth
  • Length: 4,650 mm (183 in) excluding rear wing; 5,010 mm (197 in) including rear wing
  • Width: 1,950 mm (77 in)
  • Height: 1,150 mm (45 in) measured from identical reference plane
  • Wheelbase: 2,750 mm (108 in)
  • Front axle track width: 1,645 mm (65 in)
  • Rear axle track width: 1,620 mm (64 in)
  • Max axle track width: 1,950 mm (77 in)
  • Base weight (incl. driver): 1,110 kg (2,447 lb)
  • Steering: Servo-assisted rack and pinion steering
  • Bearings: Schaeffler
  • Aerodynamics: Specification rear wing: mono-wing with laminated gurney. Inclination adjustable from 0 to 20°. Special diffusers, front and rear. Underfloor with 30 mm high skid block. Two permissible areas for flaps at the vehicle’s front end
  • Brakes: AP Racing hydraulic dual-circuit braking system, monoblock light metal brake calipers, ventilated carbon fiber brake discs, front and rear, brake force distribution between front and rear continually adjustable by the driver, electromagnetic starting valve
  • Dampers: Eibach Springs
  • Springs: Eibach Springs
  • Suspensions: Independent suspension front and rear, doublewishbone suspension, pushrod system with spring-damper unit, adjustable gas pressure dampers
  • Wheels: O.Z. Racing forged aluminium wheels
    • Front wheel: 12 x 18 inches
    • Rear wheel: 13 x 18 inches, two different rubber compounds: standard tyres and option tyres
  • Tyres: Hankook Ventus radial slick dry and treaded rain tyres
    • Front tyre: 300/680 - R18
    • Rear tyre: 320/710 - R18
  • Display instrumentation: Bosch DDU 8 Monochrome LCD Motorsport Display
  • Steering wheel: Audi Sport racing steering wheel with 10 buttons
  • Safety equipment: Sabelt 6-point seat belt, rear view mirror, HANS device, helmet, headsock, race suit, NOMEX firesuit, racing gloves, racing socks, racing boots
  • Traction control: Prohibited
  • Team: Audi Sport Team Abt Sportsline, Audi Sport Team Phoenix, Audi Sport Team Rosberg


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Last updated on 4 May 2014 at 05:00.

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