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A new challenger in a starting blocks: a minute demeanour during a BMW M4 DTM for a 2017 season.

Munich. A month brazen of a initial competition of a year in
Hockenheim (GER), BMW Motorsport is unequivocally good prepared for a 2017
DTM. While a drivers and teams can call on a resources of experience
as they go into a sixth deteriorate given BMW’s lapse to the
fiercely-competitive furloughed automobile series, a automobile is a newcomer: BMW
Motorsport lines adult this year with a BMW M4 DTM, that has been
grown according to a new technical regulations.


With 4 titles in 3 years: a automobile nomination BMW M4 DTM
is synonymous with good success. Marco Wittmann (GER) won the
Drivers’ pretension with this automobile in both 2014 and 2016. BMW Team RMG also
picked adult a Teams’ pretension in 2014, while BMW won a Manufacturers’
Championship in 2015. This year sees a emergence of a new era. In the
light of a new regulations, a BMW M4 DTM has been given a workover
and undergone poignant development. The BMW M4 DTM now generates
over 500 hp of engine power, while a aerodynamics have also been the
theme of endless modifications. Innovative record was used
when prolongation a components.

“We are unequivocally many looking brazen to a new DTM season. The many
changes are essentially directed during one thing: even some-more philharmonic for fans
during a circuit and examination on screen,” pronounced BMW Motorsport Director
Jens Marquardt. “I unequivocally like a new, some-more absolute cars. The
drivers during a circle will make even some-more of a disproportion in the
future, and fans will get even closer to a teams and drivers during the
circuit. This multiple promises to furnish a stirring deteriorate in
2017. Our engineers have worked tough over a past few months to
rise a horde of minute new solutions for a BMW M4 DTM, formed on
a DTM regulations for a 2017 season. we am unequivocally unapproachable of this team
effort. One of my personal highlights is a new demeanour of a BMW M4
DTM. The blue crosses are a pattern member that originates from the
iconic BMW 3.0 CSL of a 1970s. Any DTM fan will also recognize the
blue crosses from a mythological BMW M3 DTM in a 1980s, when they
were still stranded on. In 2017, we do this digitally – as is also the
case, for example, with a new BMW 7 Series. We are looking forward
to a initial competition weekend in Hockenheim.”


Wind of Change.

The regulations compulsory a BMW Motorsport engineers to take a new
proceed to aerodynamics when building a BMW M4 DTM. A shorter
diffusor and a fact that a float tallness has been augmenting in line
with regulations, revoke downforce and ‘dirty air’. The upsurge topology
around a automobile was totally revised. The front fender now has a
totally new figure and forms a starting indicate for a upsurge of the
atmosphere around a car. The wing mirrors will have a some-more conventional
pattern again in 2017 according to a regulations. Among a many
clearly manifest modifications are a even some-more distinguished contouring
of a side channel, a opening ducts on a back circle arches, which
are being used for a initial time, and a impossibly minute design
of a back of a car.

The back wing is also one of a some-more simply recognizable changes to
a 2017 DTM cars. The Drag Reduction System (DRS) has been modified.
Up until now, a back wing consisted of only one form and was
lowered as one partial when DRS was triggered. The back wing of a new
BMW M4 DTM is done adult of dual profiles, with a only a tip profile
sloping upwards when DRS is activated. Unlike before, a finish plates
no longer pierce with a wing. The operation of composition for a system
is adult to 40 degrees for 2017, creation it some-more fit than final year.

The front splitter and underbody of a DTM cars are standard
components, in suitability with a new regulations. The same goes for
a building panel, that is 5 millimetres thicker than before. The
back diffusor also has a totally new figure and is shorter and
agree than that of a prior model.

Over a march of a aerodynamic growth of a new BMW M4 DTM
in a BMW Group’s Aero Lab, a engineers had to be even more
fit than usual: they had only 50 days in that to exam a new
indication in a breeze hovel and to optimise it. As a result, CFD
calculations, simulations and a fast prototyping of components from
breeze hovel models played a some-more poignant role.


Even some-more power.

When it comes to a engine, a DTM regulations for a 2017 season
concede a incomparable hole for a atmosphere restrictors, by that the
engine draws in a explosion air. Having lengthened a air
restrictors from 2 x 28 millimetres to 2 x 29 millimetres, a charge
cycle was blending accordingly. This augmenting a engine performance
by about 25 hp to over 500 hp. Because a engine, now famous as the
P66/1, takes some-more cooling, due to a augmenting performance, the
cooling atmosphere intakes towards a front of a automobile were also modified.
As another outcome of a larger power, even some-more absolute and
durable carbon-fibre stop disks are also used in a DTM in 2017.

In a final spec, a BMW V8 engine consists of roughly 800 different
components. In total, a powerhouse is done adult of roughly 4,000
particular parts. When conceptualizing a DTM energy unit, BMW took full
advantage of a technological expertise of a BMW Group. The
high-tech foundry during a BMW plant in Landshut contributed a large
castings, such as cylinder heads and crankcases. The estimate of the
castings, their coating, and any required thermal treatment, was
achieved by a suitable dilettante departments in Munich.

BMW Power continues to be eliminated to a lane around a six-speed,
consecutive racing transmission, that is operated pneumatically via
change paddles on a steering wheel. It has eleven transmission
ratios, that concede a engineers and drivers to conflict to a circuit
and engine characteristics when setting-up a car.


Innovative record for even larger efficiency.

The engine mountain is a formidable constructional component, that is placed
underneath good strain, and connects a engine support to a engine. It
was done privately for a DTM automobile regulating an addition 3D
copy procession and optimised regulating topology.

BMW Motorsport engineers and their colleagues from BMW production
growth have been regarded as pioneers in a margin of additive
prolongation for decades. Together, they are forging brazen with this
future-oriented prolongation technology, augmenting both the
potency and speed of a prolongation of motorsport components. Since
2015, BMW Motorsport has used a H2O siphon circle done on a 3D printer
in a DTM engines. The high-precision component, that is theme to
high stresses, consists of an aluminium amalgamate and has proven a worth
in a tough motorsport environment.

The framework for a 2017 DTM deteriorate consists of many customary parts:
startle absorbers, anti-roll bar, wishbone, circle mounts, circle hubs and
circle nuts are now prescribed as standard. However, a BMW Motorsport
engineers had giveaway rein when it came to a side springs and a third
member of a front axle, as good as a pattern and blueprint of
a customary parts.

The carbon-fibre monocoque is again instrumental in ensuring the
reserve of a drivers in a new BMW M4 DTM. With an integrated tank,
steel hurl cage, and additional pile-up elements, it provides effective
insurance for a motorist in box of an accident.


New conditions, path by lap.

The communication between a framework and a 2017 era of
Hankook competition tyre was also of good importance. With a new pattern and
new compound, a DTM’s tyre partner is adding another exciting
member to a entrance season. The new dry tyre for a DTM – the
Ventus Race – will beget larger hold than a prototype when in
good condition. In contrast, however, it will reduce faster and more
dramatically, depending on a pushing style. This is what a car
manufacturers and organisers had intended, and it will have a
poignant outcome on path times.

Finally, new, evil LED front lights turn off the
coming of a 2017 model. They literally give a automobile a “dynamic
look”. The back lights have also been redesigned.


Marco Wittmann discusses a BMW M4 DTM on video.

During a DTM tests in Hockenheim, DTM champion Marco Wittmann took
time out to explain a many critical modifications to his Red Bull
BMW M4 DTM. You can find a video here:

You will find images from a DTM exam drives in Hockenheim here:



A compress demeanour during a pivotal modifications to a BMW M4 DTM.



Front lights: Blue crosses are a reversion to iconic BMW models on
a lane and on a highway – from a BMW 3.0 CSL and the
first-generation BMW M3 in a DTM to a stream BMW 7 Series.

BMW P66 /1 engine: Increasing a hole of a atmosphere restrictors has
increased engine energy to over 500 hp. As a consequence, further
modifications were made.

Flicks: Simpler pattern of aerodynamic attachments, in suitability with regulations.

Bumper: Re-designed front finish including front splitter for efficient
airflow, formed on changes to aerodynamics, as specified in a regulations.

Wing mirrors: Reduced aerodynamics in a wing counterpart area, in
suitability with regulations.



Tyres: New Hankook tyre construction and compound. Generates greater
hold than a prototype when in good condition. In contrast,
however, it will reduce faster and some-more dramatically, depending on
a pushing style. This is what a automobile manufacturers and organisers
had intended, and it will have a poignant outcome on path times.

Chassis: A series of components of a framework and brakes have been
standardised, as have a circle rims. However, a suspension
kinematics as good as a pattern of a dampers and springs can
still be practiced individually.

Floor panel: The wooden building row is 5 millimetres thicker, in
suitability with regulations. This leads to a larger float height, and
hence to reduction downforce.

Side channel: As during a front and back of a car, a atmosphere upsurge has
also been mutated in a side channel.



Rear wing: The DRS has been modified. The 2017 back wing consists of
dual parts, with a top partial sloping upwards when DRS is operated.
The complement is generally some-more efficient.

Diffusor: The back diffusor on a new BMW M4 DTM is shorter and flatter

than that of a predecessor, in sequence to approve with new
regulations. As such, it generates reduction downforce.

Rear lights: Design of back lights in gripping with a pattern update
of a new BMW M4 Coupé.

Rear apron: Complete renovate of a back apron and composition to
fit mutated upsurge topology – for example, due to new back diffusor.


Technical Data BMW M4 DTM.



Length: 4,725 mm

Width: 1,950 mm

Height: approx. 1,200 mm

Weight: 1,120 kg (in suitability with regulations, but driver,
contingent on opening 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 suitability with regulations

Cylinder retard and cylinder conduct done from expel aluminium during a BMW
foundry in Landshut; steel crankshaft; 4 valves per cylinder,
operated by bucket tappets; steel camshafts, driven by chains; Low
pressure, intake-manifold fuel injection, one injection projection 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 hurl cage;
carbon-fibre pile-up elements on sides; carbon-fibre pile-up elements on
front and rear



Sequential 6-speed sports gearbox, operated around pneumatic shift
paddles mounted on a steering wheel; 4-plate ZF carbon-fibre clutch;
tractable multi-disc limited-slip differential


Front axle/rear axle:

Double wishbone cessation with struts and tractable startle absorbers
(six settings); HR springs



Hydraulic dual-circuit stop system; alloy, monoblock brake
callipers; internally-ventilated, carbon-fibre stop disks front and
rear; stop change tractable by driver; electromagnetic start valve



Aluminium fake wheels; 18” x 12” front, 18” x 13” rear



Hankook; front: 300-680-18, rear: 320-710-18 (new pattern and compound)