BMW M4 DTM 2017 Season

In Motorsport, News by fullboost

• More performance, a new look, and innovative manufacturing technology.
• Many new features according to the 2017 technical regulations.
• Jens Marquardt: “The drivers will make an even bigger difference in the future.”

Munich. A month ahead of the first race of the year in Hockenheim (GER), BMW Motorsport is very well prepared for the 2017 DTM. While the drivers and teams can call on a wealth of experience as they go into the sixth season since BMW’s return to the fiercely-competitive touring car series, the car is a newcomer: BMW Motorsport lines up this year with the BMW M4 DTM, which has been developed according to the new technical regulations.

With four titles in three years: the vehicle designation BMW M4 DTM is synonymous with great success. Marco Wittmann (GER) won the Drivers’ title with this car in both 2014 and 2016. BMW Team RMG also picked up the Teams’ title in 2014, while BMW won the Manufacturers’ Championship in 2015. This year sees the dawn of a new era. In the light of the new regulations, the BMW M4 DTM has been given a workover and undergone significant development. The BMW M4 DTM now generates over 500 hp of engine power, while the aerodynamics have also been the subject of extensive modifications. Innovative technology was used when manufacturing the components. “We are very much looking forward to the new DTM season. The many changes are primarily aimed at one thing: even more spectacle for fans at the circuit and watching on screen,” said BMW Motorsport Director Jens Marquardt. “I really like the new, more powerful cars. The drivers at the wheel will make even more of a difference in the future, and fans will get even closer to the teams and drivers at the circuit. This combination promises to produce a thrilling season in 2017. Our engineers have worked hard over the past few months to develop a host of detailed new solutions for the BMW M4 DTM, based on the DTM regulations for the 2017 season. I am very proud of this team effort. One of my personal highlights is the new look of the BMW M4 DTM. The blue crosses are a design element that originates from the iconic BMW 3.0 CSL of the 1970s. Any DTM fan will also recognise the blue crosses from the legendary BMW M3 DTM in the 1980s, when they were still stuck on. In 2017, we do this digitally – as is also the case, for example, with the new BMW 7 Series. We are looking forward to the first race weekend in Hockenheim.”

Wind of Change.

The regulations required the BMW Motorsport engineers to take a new approach to aerodynamics when developing the BMW M4 DTM. A shorter diffuser and the fact that the ride height has been increased in line with regulations, reduce downforce and ‘dirty air’. The flow topology around the car was completely revised. The front bumper now has a completely new shape and forms the
starting point for the flow of the air around the car. The wing mirrors will have a more conventional design again in 2017 according to the regulations. Among the many clearly visible modifications are the even more prominent contouring of the side channel, the vent ducts on the rear wheel arches, which are being used for the first time, and the incredibly detailed design of the rear of the car. The rear wing is also one of the more easily recognisable changes to the 2017 DTM cars. The Drag Reduction System (DRS) has been modified. Up until now, the rear wing consisted of just one profile and was lowered as one part when DRS was triggered. The rear wing of the new BMW M4 DTM is made up of two profiles, with the just the top profile tilting upwards when DRS is activated. Unlike before, the end plates no longer move with the wing. The range of adjustment for the system is up to 40 degrees for 2017, making it more efficient than last year.

Technical Data BMW M4 DTM.
Length: 4,725 mm
Width: 1,950 mm
Height: approx. 1,200 mm
Weight: 1,120 kg (in accordance with regulations, without driver, dependent on
performance ballast)
Type: P66/1, 90° V8 aspirated engine
Capacity: 3,999 cc
Weight: 148 kg
Bore: 93 mm
Stroke: 73.6 mm
Engine speed: max. 8,500 rpm
Performance: over 500 hp
Air restrictors: 2 x 29.0 mm, in accordance with regulations
Cylinder block and cylinder head made from cast aluminium at the BMW foundry
in Landshut; steel crankshaft; four valves per cylinder, operated by bucket
tappets; steel camshafts, driven by chains; Low pressure, intake-manifold fuel
injection, one injection nozzle per cylinder; dry sump system
Acceleration: 0-100 km/h in 2.6 sec.
Top speed: approx. 285 km/h
Tank capacity: 120 litres
Carbon-fibre monocoque with integrated tank and steel roll cage; carbon-fibre
crash elements on sides; carbon-fibre crash elements on front and rear
Sequential 6-speed sports gearbox, operated via pneumatic shift paddles
mounted on the steering wheel; 4-plate ZF carbon-fibre clutch; adjustable multidisc
limited-slip differential
Front axle/rear axle:
Double wishbone suspension with struts and adjustable shock absorbers (six
settings); H&R springs
Hydraulic dual-circuit brake system; alloy, monoblock brake callipers; internallyventilated,
carbon-fibre brake disks front and rear; brake balance adjustable by
driver; electromagnetic start valve
Aluminium forged wheels; 18” x 12” front, 18” x 13” rear
Hankook; front: 300-680-18, rear: 320-710-18 (new design and compound)