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First production road car with a Water Injection System
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World-exclusive OLED light technology
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Specially designed full three-way adjustable M coilover suspension
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Intelligent lightweight body design
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Most agile, radical and powerful M4 ever
Woodcliff Lake, N.J.:
October 6, 2015 6:01 pm EDT /3:01 pm PDT … BMW today
announced the new 2016 BMW M4 GTS giving BMW M GmbH a new and
exclusive technological masterpiece which elevates the potential of
the BMW M4 Coupe to an impressive new level. With its powerful,
motorsport-inspired looks and high-performance technology, the BMW M4
GTS has its sights set squarely on the race track. Thanks to an
innovative water injection system helping boost power to 493 bHP and
track ready chassis, this Special Edition M vehicle recorded a lap
time of 7 minutes 28 seconds around the legendary
Nürburgring-Nordschleife, the world’s most challenging race circuit,
making a clear statement about this model’s exceptional dynamic
abilities. At the same time, the sharpest BMW M4 of all can also hold
its own on public roads. BMW M GmbH is launching the BMW M4 GTS in a
special edition limited to approximately 700 units worldwide, with
roughly 300 units of this high-performance Special Edition M4
available for the first time in the US market. In so doing, it is
highlighting the innovative flair of the BMW M engineers in developing
trailblazing M technologies on the powertrain, chassis and lightweight
construction fronts.
“Special Edition models sharpen the character of the BMW M brand and
embody an emotionally rich and exclusive driving experience. We’ve
taken a radical route with the set-up of the BMW M4 GTS to create a
sports machine for the race track that delivers top-end dynamics and
inspirational performance. It allows us to demonstrate what is
possible today with a road-legal car. Owners can drive their BMW M4
GTS to circuits such as Spa-Francorchamps, the Nürburgring or Laguna
Seca – for clubsport events, for example – and then set lap times
there that raise the bar to extremely high levels for road-legal
cars.” says Frank van Meel, CEO of BMW M GmbH.
Performance boost courtesy of innovative water injection.
At the heart of each and every BMW M model is its engine. The BMW M4
GTS uses the multi-award-winning M TwinPower Turbo 6-cylinder in-line
engine from the BMW M4, capable of 7,600 rpm but adds innovative water
injection technology to give the 3.0-liter unit a substantial power
boost. Unusually high-revving for a turbocharged engine, it offers
linear power delivery over a wide engine speed range. An innovative
water injection system, used for the first time in a road car, takes
this 6-cylinder in-line turbocharged unit to new performance heights
by relaxing the thermal constraints on power and torque. The system
has already proved itself on race tracks around the world on board the
BMW M4 MotoGP Safety Car, this year’s lead safety car in the world’s
top motorcycle racing series.
The engine develops its maximum power of 493 bHP – an increase of 16
percent over the BMW M4 – at 6,250 rpm. Peak torque has been increased
by 10 percent to 442 lb-ft, and is maintained over a very wide rev
band (4,000 rpm to 5,500 rpm). It accelerates from a standstill to 60
mph in a mere 3.7 seconds, on the way to a governed top speed of 189.5
mph. Despite the significant extra power, the engine also excels on
fuel efficiency, providing similar levels to those found in the BMW M4 Coupe.
Innovative water injection system.
The BMW M4 GTS is the first production road car to be fitted with a
trailblazing water injection system. With this arrangement, the BMW M
engineers have utilized the principle that water absorbs heat from the
surrounding air when it changes phases. Water is injected as a fine
spray into the intake manifold plenum chamber where it evaporates
(phase change), significantly lowering the temperature of the intake
air. This action reduces the final compression temperature in the
combustion chamber, minimizes the risk of knock and allows the
turbocharged engine to operate with higher boost pressure and advanced
spark timing. The result is increased power and torque, and a
substantial improvement in efficiency. Despite the extra power output,
thermal stress on all performance-related components is reduced. All
of these features ultimately help to diminish wear and prolong engine life.
Increased power, reduced full-throttle fuel consumption.
The benefits of water injection can be utilized in various ways,
depending on engine and vehicle type. In particular the engineers have
considerable latitude when deciding how to balance their priorities
between increased power and fuel efficiency. If water injection is
taken into account in the design of a high-performance engine right
from the start, it is possible to use turbochargers with a higher
boost ratio and compression ratio. At the same time, power losses due
to an increase in ambient temperature (> 68° F) can be compensated
by increasing the amount of water injected.
The engineering behind intake temperature.
The output of an internal combustion engine is physically limited by
the operating temperature in the combustion chamber. If a given
operating temperature is exceeded, this will result in uncontrolled
combustion (knock), leading to power losses and, in the worst case, to
severe engine damage. This is particularly relevant in the case of
turbocharged engines, where the intake air is heated in the
turbocharger compressor to as much as 320° F. Although intercooling
can be used to cool the pressurized air, the capacity of intercooling
systems is physically limited. Depending on the design and size of the
system, and the aerodynamics of the vehicle, it is only possible to
use an intercooler to reduce the intake air temperature by as much as
160° F before it enters the plenum chamber. This means that simply
rising engine power by increasing boost pressure is not an option as
it would mean exceeding the knock threshold.
This is where the BMW M division’s solution comes in: if water is
injected in a fine spray mist into the intake plenum chamber, it is
possible to reduce the temperature of the intake air by an additional
80° F. This further cooling of the pressurized air makes it possible
to advance the spark timing closer to the optimal value. This results
in a more efficient combustion process, while at the same time
reducing the final combustion temperature. An additional advantage is
the fact that cool air is more dense which increases the amount of
oxygen in the combustion mixture and results in a higher mean
combustion pressure, leading to optimized power and torque
development. This efficient in-cylinder cooling system also reduces
the thermal stress on a broad range of components including not only
the pistons, exhaust valves and catalytic converter but also, due to
the lower exhaust gas temperatures, the turbocharger.
Water injection raises the knock threshold.
Using water injection to raise the knock threshold also goes a long
way towards resolving a fundamental conflict in the design of
high-performance engines, caused by the fact that power output and
fuel consumption are closely dependent on compression ratio. This is
particularly true in the case of highly turbocharged engines like the
M TwinPower Turbo 6-cylinder in-line engine. Here, a high compression
ratio provides high efficiency and low fuel consumption at low and
medium throttle. In the full-throttle range, however, the compression
ratio is limited by the knock threshold. Water injection provides a
particularly effective way of raising the knock threshold, allowing
for a higher compression ratio. The end result is optimized power
output over a wide operating range.
Clever practical implementation of the water injection system.
The BMW M division’s engineers opted for an arrangement of three
water injectors in the intake plenum chamber where each supply water
to two of the straight-6 engine’s cylinders. This solution makes for
uniform water distribution and a compact system design.
An underfloor compartment in the trunk houses a 1.3 gallon water
tank, the water pump, sensors and valves. The pump and all the sensors
and actuators are controlled by an expanded engine management system.
The pump supplies water to the injectors at a pressure of
approximately 145 psi. The injection quantity can be varied depending
on load, engine speed and temperature, which helps to keep water
consumption to a minimum. Under hard driving on the track, the water
tank might have to be topped up every time the vehicle is refueled.
However under normal everyday operating conditions, the intervals are
much longer. Even in highway driving, the water tank only needs
topping up at every fifth refueling interval. Otherwise the system is
maintenance-free, for maximum everyday practicality.
The BMW M water injection system is equipped with a sophisticated
self-diagnosis system. If the water tank runs dry, or in the event of
a system malfunction, appropriate measures are taken to protect the
engine. Boost pressure and spark timing are adjusted, allowing the
engine to continue to operate safely. Even when things are working
normally, a variety of precautions are taken to keep the system fully
functional. Every time the engine is switched off, all the water in
the hose system is drained into the tank to prevent system components
from icing up in sub-zero temperatures. The water tank is frost-proof.
Additional engine highlights.
The BMW M4 GTS turbocharged engine features a very rigid closed-deck
crankcase design that makes it possible to develop higher pressure in
the cylinder for improved power output. Instead of liners, the
cylinder bores feature a twin-wire arc-sprayed coating, which results
in a significant reduction in engine weight.
A further technical highlight is the forged and highly torsionally
rigid crankshaft which, as well as providing increased torque-carrying
capacity, is also lighter. The substantial reduction in rotating
masses results in improved throttle response and acceleration.
On the track, the high performance capability of the BMW M4 GTS
places extra demands on the engine oil supply system. In designing
this system, the BMW M division has once again taken full advantage of
its extensive motorsport experience. The aluminum oil sump is designed
to limit the movement of the oil under the influence of strong lateral
forces, while an oil suction pump and a sophisticated oil return
system to the turbocharger help to maintain stable oil circulation
under extreme acceleration and deceleration. Oil is supplied
continuously to all engine components in all driving situations,
whether in everyday driving or during a hard weekend drive at the track.
The typical BMW M exhaust system design features four tailpipes, in
this case each with an 80-millimeter diameter and laser-engraved M
emblem. The expected performance car engine exhaust note is provided
by a carefully designed lightweight titanium rear silencer. This
set-up provides a striking, emotionally charged and unmistakable BMW M
sound over the entire engine speed range, minimizing exhaust
back-pressure while giving precise feedback on engine load.
Additionally the driver can adjust the exhaust note profile depending
on which of the various preconfigured drive modes is selected.
M TwinPower Turbo technology.
The BMW M4 GTS engine’s M TwinPower Turbo package comprises two
fast-responding mono-scroll turbochargers, High Precision Injection,
VALVETRONIC variable valve lift control and Double-VANOS continuously
variable camshaft timing. The result is smooth and efficient power
delivery with extremely sharp response.
7-speed M double-clutch transmission with Drivelogic.
The BMW M Division’s 7-speed M double-clutch transmission with
Drivelogic (M DCT) sets standards in terms of smooth power delivery,
lightning quick up-shift gear changes, perfect rev-matching downshifts
and track-ready design. In addition to automatic shifting, this highly
advanced transmission also enables shifting without torque
interruption, using the steering wheel shift paddles or center console
mounted gear lever. Manual mode also offers a specially configured
Launch Control system that provides ultra-fast acceleration off the
line, with optimal gear changes for the subsequent upshifts.
Drivelogic offers a choice of three shift programs.
The Drivelogic program for the 7-speed M double-clutch transmission
offers three selectable shift programs, which can be engaged using the
Drivelogic button on the center console. These programs differ in
terms of engagement speed and the rpm points at which the gearshifts
take place. The spectrum ranges from extremely sporty to a more
relaxed, yet dynamic shifting. A further M function, Stability Clutch
Control, provides assistance in sporty driving situations. It
automatically disengages the clutch when necessary to prevent oversteer.
Unbeatable precision and clear feedback chassis. The perfect
ally for BMW M Power.
The BMW M division specializes in developing cars that combine
precise steering, outstanding agility with a refined driving
experience and superb traction and stability. All BMW M models –
including the new BMW M4 GTS – unite excellent track capability that
has been tested on the Nürburgring Nordschleife (North Loop), the most
challenging racing circuit in the world, with high standards of
everyday driveability. At the same time, the BMW M4 GTS’s enhanced
performance and track capabilities are backed up by additional
refinements on the chassis front.
Aluminum and Carbon-Fiber construction support the “Ultimate
Driving Machine”.
First and foremost, an ultra-dynamic driving experience depends on a
suspension system that combines low weight with high stiffness. Just
like the BMW M4, the BMW M4 GTS is equipped with lightweight aluminum
control arms, wheel carriers and axle subframes. On the double-joint
spring-strut front axle alone, this cuts weight by more than 10 pounds
compared with conventional steel components. Play-free ball joints and
specially developed elastomer bearings provide optimal, direct
transmission of longitudinal and transverse forces. The aluminum
stiffening plate, CFRP front strut tower brace and additional bolted
connections between the axle subframe and body structure all make for
a stiffer front end.
At the rear, all control arms and wheel carriers on the five-link
axle are of forged aluminum, which reduces the unsprung masses by more
than 6 pounds compared with a conventional design. The racing-derived
rigid connection between the rear axle subframe and the body,
dispensing with rubber bushings, improves wheel location and tracking stability.
Specially designed full three-way M coilover suspension
The BMW M4 GTS features a three-way adjustable coilover suspension
with mechanically adjustable compression and rebound settings, with
precise independent adjustment of low-speed and high-speed
compression. This allows the suspension to be customized to the
characteristics of different tracks. Moreover, the anti-roll bars and
support mounts are closely matched to the significantly increased
engine power and are specifically designed for the “Ultimate Driving Machine”.
Precise engineering also extend to the steering system.
The steering system has also been adapted to the BMW M4 GTS’s track
capabilities. The steering torque curve, always critical for a smooth
steering feel, has been further optimized by modifications to the
front suspension kinematics and the incorporation of features such as
asymmetric steering support mounts and a motorsport-derived,
custom-designed, milled swivel bearing. This design allows optimized
axle geometry for lateral dynamics and steering torque, which again
translates to enhanced driving dynamics.
The swivel bearing also allows the use of 9.5 inch wide front wheels.
The higher damper clamp in conjunction with the ball joint in the
front axle support mount results in substantially increased camber
stiffness. It also provides faster response to lateral forces, which
is already enhanced by the wider wheels. For further improved lateral
grip, the BMW M engineers have retained the 19-inch front tires, while
the rear axle makes use of 10.5 inch wide wheels running on 20 inch
diameter tires. The front camber setting has been adapted to a minus
two degree setting for increased cornering lateral forces.
Further enhanced rear-wheel drive with Active M Differential.
Other features helping to add an extra edge to the driving dynamics
include the rear differential’s hollow lightweight output shafts and
the Active M Differential. To optimize traction and stability, the
latter uses an electronically controlled multi-plate limited-slip
differential, which is adapted to the significantly enhanced
performance capability of the BMW M4 GTS. The multi-plate limited-slip
differential is proactively controlled with extremely high precision
and speed. Its control unit is linked to the Dynamic Stability Control
(DSC) system and takes into account accelerator pedal position, wheel
speeds and vehicle yaw. All driving situations can therefore be
precisely analyzed and an imminent loss of traction at one side of the
vehicle is identified at a very early stage. When necessary, the
system reacts with split-second speed to vary the locking action,
which can be anywhere between zero and 100 percent. This prevents
wheel spin on low-traction surfaces, on split-traction surfaces with a
big difference in friction coefficient between the left and right rear
wheels, on tight hairpin bends or during fast steering maneuvers. The
optimized traction also provides superb stability in challenging
conditions and allows to optimally transfer the power to the ground
while accelerating out of corners.
Electronic assistance systems adjustable to personal driving
style.
M Dynamic Mode (MDM), a special DSC mode, can be activated whenever
drivers want an extra-sporty driving experience. Whereas DSC focuses
on correcting understeer or oversteer, M Dynamic Mode allows more
wheel slip for controlled drifting. This mode caters to sporty-minded
drivers, although – unlike DSC OFF mode – the system still intervenes
if the vehicle reaches a critical stability threshold. The DSC system
and the Anti-lock Braking System (ABS) have been configured to take
into account the BMW M4 GTS’s increased performance and its newly
developed three-way coilover suspension.
Tire development was integrated into the suspension set-up right from
the start. For high-performance sports cars like the BMW M4 GTS,
steering feel and precision are a particularly important priority when
developing the front tires, alongside lateral stability and the
transmission of braking forces, while for the rear tires the focus is
on traction, lateral stability and directional stability. To meet the
very highest dynamic standards, the BMW M4 GTS is equipped with
low-weight, high-stiffness forged wheels running on mixed-size
Michelin Pilot Sport Cup 2 tires (front: 265/35 R19; rear: 285/30
R20). The 19-inch front wheels (9.5 J x 19) improve steering
precision, while the 20-inch (10.5 J x 20) rear wheels provide
outstanding traction and an optimal transfer of drive power to the
road. The Cup tires complement the fine-tuned suspension set-up by
ensuring optimal traction and precise feedback for exceptionally agile handling.
The electromechanical steering system was also developed in-house by
the BMW M division. Strong points of this specially configured
steering system, which forms the key control interface between driver
and vehicle, include its direct steering feel and precise feedback. To
further improve driver feedback, BMW M engineers opted for no elastic
section in the BMW M4 GTS steering column. The integrated Servotronic
function electronically adjusts the level of power assist according to
road speed, providing optimal steering characteristics at all speeds.
The Servotronic button on the center console offers three different
settings, each with its own specific profile: COMFORT, SPORT and
SPORT+. These settings can be programmed into the M1 and M2 buttons in
the M Drive menu. They can then be activated while driving by pressing
the appropriate steering wheel button. In each case the level of
steering assistance is adapted to the current requirements and the
driver’s personal preferences.
Choice of drive settings – from moderately sporty to extremely sporty.
The characteristics of the electronic accelerator pedal can be
customized using the M Driving Dynamic Control system. On the road,
the settings can be configured for a more temperate sporty
performance. For track use, on the other hand, priority can be given
to instantaneous and explosive power delivery. It is also possible,
using the M Drive menu or the DSC OFF button, to choose one of three
different settings for the Dynamic Stability Control (DSC) system
(DSC, MDM or DSC OFF), while different shift characteristics for the
seven-speed M double-clutch transmission can be selected using the
Drivelogic button on the center console. In this way, drivers can
choose their own personal combination of drive settings, putting the
accent either on the extreme sporty performance of which the BMW M4
GTS is capable or on somewhat more tempered dynamism. Via the M Drive
menu, two sets of preferred personal configurations can be programmed
into the M1 or M2 steering wheel buttons for instant access. The
personalized settings for all the relevant systems can then be
activated while driving at a single touch of the appropriate button.
Nürburgring Tested - Ultra-high performance M Carbon Ceramic Brakes.
In keeping with its outstanding performance potential, the BMW M4 GTS
is equipped with lightweight, optimized, ultra-high-performance M
carbon ceramic brakes, which are designed for a further enhanced track
capability and longer life. The brakes are made of
carbon-fiber-reinforced silicon carbide (C/SiC).
The brake discs are made up of two elements: the support body with
the cooling ducts is made out of a high carbon fiber content, while
the inner and outer friction layers have a high ceramic content. The
brake disc hub is of compound design and made of aluminum. It is
connected to the brake disc ring by radial friction bearings. This
design, with the special friction layer, gives the carbon ceramic
brake discs an operating life of several times that of conventional
brake discs. The modified rear brake system of the BMW M4 GTS features
modified specifications for an improved friction coefficient. At the
same time, the front brake guards have been adapted to improve ventilation.
Visually, the M carbon ceramic brakes can be distinguished by their
gold-painted 6-piston (front) or four-piston (rear) brake calipers
with colored M logo. Particularly during high-performance driving on
the track, they boast excellent modulation, outstanding deceleration
capabilities and stable, fade-resistant performance. Being much
lighter than a conventional brake system, they also contribute to the
all-round reduction in unsprung masses and therefore also enhance
driving dynamics.
Intelligent lightweight design
Intelligent lightweight engineering, already a vital consideration
for the BMW M4, has been taken to new and even more uncompromising
levels on the BMW M4 GTS. The goal was to minimize curb weight in
order to give the new model outstanding driving dynamics, top-class
agility and highest efficiency. Rigorous weight reduction measures
include even the smallest details of the BMW M4 GTS, delivering a DIN
curb weight of 3,329 pounds (ECE curb weight: 3,494 lbs). Its
outstanding weight to power ratio of roughly 6.5 lbs/hp provides the
perfect platform for a highly dynamic driving experience.
The low weight of the BMW M4 GTS improves not only performance but
also dynamics and handling. Drivers perceive the benefits in the form
of even more responsive steering, more precise cornering, shorter
stopping distances and new levels of control when pushing the vehicle
to its limits.
High-tech carbon construction reduces weight.
Like the BMW M4 Coupe, the BMW M4 GTS has a carbon-fiber-reinforced
plastic (CFRP) roof that is more than 13 pounds lighter than a
corresponding metal roof. Lightweight, robust CFRP is also used for
the hood, which is approximately 25 percent lighter than its aluminum
counterpart on the BMW M4. Both of these lightweight components play
an important role in lowering the center of gravity (CG) and improving
axle load distribution. In the BMW M4 GTS, BMW reaps the benefits of
its many years’ experience in high-tech carbon construction. The use
of CFRP continues under the skin as well, for example in components
such as the instrument panel support.
The contoured roof line with the typical center channel carries over
into the trunk lid, emphasizing the very sporty personality of the BMW
M4 GTS. The geometry of the trunk lid, which is made of CFRP and
plastic, is precisely designed to optimize the rear aerodynamics and
to help direct air to the lightweight CFRP rear spoiler. The spoiler
is attached to the trunk lid by two CNC-milled aluminum supports, each
consisting of an intricate strut arrangement that optimally combines
high stiffness with very low weight.
Lightweight exposed carbon fiber is also on display in the adjustable
splitter underneath the BMW M4 GTS’s front apron and in the rear apron
diffuser. Exterior lightweight design measures continue with the
exclusive forged, machine-polished, low-weight BMW M star-spoke wheels
in Acid Orange and the M carbon ceramic brakes, both of which not only
cut down on overall weight but also significantly reduce unsprung
masses. The M engineers have also extended their uncompromising focus
on lightweight engineering to the sports exhaust system, which
features a titanium rear silencer. The BMW M4 GTS’s sports exhaust
system produces an authentic racing engine note while providing a 20
percent weight reduction when compared to a stainless steel component.
Extensive weight reduction continues under the skin.
Needless to say, lightweight engineering is not just confined to the
visible areas of the body. For example, the BMW M4 GTS’s single-piece
driveshaft is made of carbon-fiber-reinforced plastic (CFRP), which is
even lighter than the corresponding component in the BMW M4. The low
mass and high stiffness of the CFRP means that the driveshaft can be
produced as a single-piece component, without a center bearing. This
achieves weight savings of 40 percent over a conventional component,
with a simultaneous reduction in rotating masses. This in turn results
in improved powertrain dynamics and better response.
All weight-saving measures are designed with an eye to improved
driving dynamics. A good example is the CFRP strut brace in the engine
compartment. Weighing a little over 3 pounds, it offers superior
stiffness to a comparable aluminum component. At the same time it
plays a key part in ensuring eager turn-in and excellent steering precision.
Authentic racing feel in the interior.
The many lightweight features in the interior of the BMW M4 GTS don’t
just save weight, they also exude an authentic racing feel. This
Special Edition vehicle is fitted with different bucket-style M sports
seats in Alcantara (including lightweight backrests with cut-outs). In
between the seats, the BMW M4 GTS boasts a new, asymmetrically styled
lightweight center console that shaves around 30 percent off the
weight of the corresponding component in the BMW M4 Coupe.
A further weight-saving measure is the deletion of the rear seats.
This area is now trimmed in glass-fiber-reinforced plastic (GFRP),
with a carbon sandwich bulkhead to the rear. Both of these elements
are designed for reduced weight, a lower center of gravity and maximum
stiffness. The across-the-board lightweight engineering approach also
extends to the door panel trim and rear side panel trim with modified
design geometry and special lightweight construction based on
renewable natural materials. Conventional door handles are replaced by
door release pull loops, while Alcantara trim makes an appearance only
on the armrests. The weight of the door panel trim has been reduced in
half compared with standard components.
Three-dimensional front-end design.
Viewed from the front, the visual features that stand out the most
are its muscular contours and the prominent three-dimensionality of
its lines, which lend it a particularly expressive face.
Characteristic design elements, such as a cutting-edge design take on
the familiar twin circular headlamps with LED technology, the
eye-catching front grille with M double bars in black and the
powerfully sculpted front apron with its trio of large air intakes,
dedicated to cooling the high-performance engine and brakes,
immediately set it apart as the work of BMW M and spotlight its even
more sportier pretensions. Needless to say, the BMW M4 GTS also
features the striking M exterior mirrors in twin-stalk style and
hallmark powerdome on the hood. The carbon-fiber-reinforced plastic
(CFRP) hood is painted in body color and features a large air outlet.
Thanks to the use of CFRP, the hood weighs 25 percent less than an
aluminum equivalent, which helps both to lower the car’s center of
gravity and further improve the balance of weight between the front
and rear axle. The air outlet on the hood optimizes the airflow and
reduces lift at the front axle. The front end’s weight-minimized
splitter is made from lightweight exposed carbon fiber, has a
contrasting stripe in bright Acid Orange running along its leading
edge and can be set in two positions for road or track. The splitter
divides the surging air, channeling part of it deliberately under the
car to optimize aerodynamics. Here, the airflow is accelerated on its
way to the carbon-fiber diffuser at the rear.
Low-slung silhouette, dynamic lines.
The flanks of the BMW M4 GTS pick up the dynamic verve of its front
end and extend it rearwards. Hallmark BMW proportions – long hood,
long wheelbase, set-back greenhouse, short overhangs – are emphasized
by M design elements. Muscular wheel arches and dramatic surfacing
translate the dynamic potential of the BMW M4 GTS into tangible form.
This potential is accentuated by the M gills – in high-gloss black
like the kidney grille surround – which fulfills both a stylistic and
functional role. The gills house Air Breathers, which team up with Air
Curtains in the front apron to optimize airflow through the wheel
arches and enhance aerodynamics in the process.
The combination of a dark-colored, clear-coated CFRP roof and
contoured roofline gives the BMW M4 GTS a hunkered-down look, with the
cant rails painted in body color perceived as the car’s highest point.
The flowing roofline lends an extra touch of elegance to the
ultra-sporty appearance of the BMW M4 GTS. The large, forged M
light-alloy wheels, featuring distinctive star-spoke design in Acid
Orange and polished surfacing, appear to fill the wheel arches even
more completely and give the BMW M4 GTS a compact, powerful
appearance. The car’s lines pick up speed again as they stream
rearwards, accentuate the body’s aerodynamic flow and, at the same
time, add muscle to the rear end.
Rear wing and diffuser made from lightweight CFRP.
The back end of the BMW M4 GTS can be distinguished clearly from that
of the BMW M4 Coupe. On the trunk lid, for example, an adjustable
carbon-fiber rear wing resting on intricate, CNC-machined aluminum
struts provides a head-turning design feature. The rear wing can be
adjusted through three positions – one for road driving and two others
that can be selected according to individual preference on the track.
Identifying features of the BMW M4 include the flared rear wheel
arches which, together with the car’s wide track, underline its
confident appearance. The double-chamber exhaust system, with its two
pairs of tailpipes, is another signature BMW M feature. Here, the
titanium tailpipes – with their 80-millimeter diameter and
laser-engraved M logo – are another reference to the standalone
character of the BMW M4 GTS. They are framed by a clearly structured
rear apron and flank the exposed carbon-fiber diffuser. The diffuser
forms a single aerodynamic unit with the rear wing and front splitter,
which is likewise made from carbon fiber. They work together to
optimize airflow and, in so doing, improve downforce and roadholding.
The trunk lid of the BMW M4 GTS also performs an integral aerodynamic
role. Its specifically contoured lines channel the air at the rear of
the car and improve airflow to the rear wing. In this way, the pair of
lines spawned by the powerdome on the hood and extending over the CFRP
roof in clearly defined contours reach their journey’s end at the
trunk lid.
World premiere for OLED rear lights.
The rear lights of the BMW M4 GTS are the first of any
series-produced vehicle to feature BMW Organic Light with OLED
technology. OLEDs (organic light-emitting diodes) generate their light
using wafer-thin layers of semi-conducting organic materials. Unlike
LEDs, which emit their light in the form of points, OLEDs light up
over their full surface with a homogeneous effect. Their flat design
(they measure just 1.4 millimeters in height) and the ability to
trigger individual light modules separately open up fresh
possibilities for a characteristic and distinctive BMW lighting design
– both at night and daylight.
Pure-bred, exclusive interior offers flawless ergonomics.
The M sports steering wheel, likewise covered in exclusive,
anthracite-colored Alcantara, represents a clear nod to motor racing
and is exceptionally grippy. A perforated stripe in contrasting Acid
Orange at the “12 o’clock” position on the wheel marks the steering’s
central positon, which comes in handy when the driver is pushing hard
on the track. The Alcantara-covered interior trim strip has a
perforated GTS badge with Acid Orange highlighting. The new center
console of the BMW M4 GTS is asymmetric in design and lightweight in
construction. Like the handbrake lever gaiter, it is covered in
anthracite-colored Alcantara with edging adorned with dark grey
contrast stitching.
The interior door panels and rear side panels also include
lightweight design elements produced specially for the BMW M4 GTS.
These display a new, purist geometry and are made from renewable raw
materials. For example, the handles normally found on the inside of
the doors are replaced here by pull loops which, like the seat belts,
also come in black and feature longitudinal stripes in the signature M
colors. Together with the Alcantara covering used for the armrests
only, the door trim deepens the stripped-back and purpose-driven
character of the interior. The omission of a rear seat bench takes
this approach to another new level. The rear seat surfaces are
replaced by an innovative glass-fiber-reinforced plastic (GFRP) shelf,
combined with a rear panel made in a carbon-fiber sandwich
construction. Lowering the car’s weight and center of gravity, while
also ensuring unbeatable rigidity, once again took priority here.
A central feature of the interior is the roll bar, which is made from
high-strength steels and mounted behind the front seats. Its Acid
Orange paint finish provides another color accent, and its influence
is not confined to the interior; visible from the outside, it also
helps shape the overall perception of the BMW M4 GTS and signals the
car’s sense of purpose and racing intent.
Wide range of carefully selected standard equipment.
The BMW M4 GTS underlines its impressive dynamic caliber with a range
of specifically selected and exclusive equipment fitted at the
factory. As well as the high-quality Alcantara/Merino leather interior
trim, this includes the BMW Navigation system, air conditioning,
Adaptive LED Headlights, Park Distance Control (PDC) front and rear,
automatically dimming rear-view and exterior mirrors and BMW
Individual high-gloss Shadow Line trim. A selection of signature BMW M
equipment features such as M door sill finishers, an M footrest, an M
gearshift lever, M-specific circular instruments with white graphics,
an M sports steering wheel with Alcantara covering and a central
position marker in Acid Orange, plus electroplated-look gearshift
paddles, round off the overall package. Four color shades are
available for the exterior paintwork. Customers can also choose from
Sapphire Black metallic, Mineral Grey metallic, Alpine White and
Frozen Dark Grey Metallic paint finish.
The new BMW M4 GTS.
Technical Specifications.
| | | | |
M4 GTS |
Body | | | |
Seats | -- | 2 |
Number of Doors | -- | 2 |
drive type | -- | RWD |
Vehicle length | inch | 184.6 |
Vehicle width | inch | 73.6 |
Width including mirrors | inch | 79.3 |
Vehicle. Height | inch | 54.4 |
Wheelbase | inch | 110.7 |
Overhang front | inch | 32.6 |
Rear overhang | inch | 41.3 |
Ground clearance | inch | 4.3 |
Turning circle | ft | 40 |
Legroom front | inch | 42.2 |
Legroom 2nd row | inch | - |
Shoulder room front | inch | 55.3 |
Shoulder room rear | inch | - |
Headroom front | inch | 39.8 |
Front Seat Volume | ft³ | 53.8 |
Rear Seat Volume | ft³ | - |
Luggage vol. (EPA) | ft³ | 11 |
Ramp angle | ° | 10.2 |
US Tank capacity | gal | 15.8 |
rear Weight distribution (empty
car) | % | 47.1 |
US Curb weight | lbs | 3610 |
US Gross vehicle.
weight | lbs | 4190 |
US Payload | lbs | 575 |
| | | | | |
Engine | | | |
Engine type | -- | S55B30T0 |
Engine technology | | M TwinPower Turbo
technology: two MonoScroll turbochargers,
High Precision Injection, VALVETRONIC fully variable valve
lift control, Double-VANOS variable camshaft timing, Water Injection |
Cylinders | -- | 6 |
Valves per cylinder. | -- | 4 |
Stroke | mm | 89.6 |
Bore | mm | 84 |
Displacement | cm³ | 2979 |
Compression rate | :1 | 10.2 |
Engine power | hp | 493 |
at rpm | 1/min | 6250 |
minimum Engine speed at maximum
power | 1/min | 6250 |
maximum Engine speed at maximum
power | 1/min | - |
Engine torque | lb-ft | 443 |
at rpm | 1/min | 4000-5500 |
minimum Engine speed at maximum
torque | 1/min | 4000 |
maximum Engine speed at maximum
torque | 1/min | 5500 |
Fuel type | -- | gasoline |
Useable Fuel quality | -- | AKI 91 MIN |
recommended | -- | AKI 93 |
Engine oil (filling
quantity) | liter | 7 |
| | | | | |
Transmission | | |
Transmission type | -- | DKG |
Gear ratios | | | |
1st gear | -- | 4.806 |
2nd | -- | 2.593 |
3rd | -- | 1.701 |
4th | -- | 1.277 |
5th | -- | 1 |
6th | -- | 0.844 |
7th | -- | 0.671 |
Reverse gear | -- | -4.172 |
Final drive ratio | -- | 3.462 |
Power-steering | -- | EPS |
Steering transmission,
overall | :1 | 15 |
| | | | | |
Driving Dynamics and Safety |
| |
Suspension, front | | Three-way M coilover
suspension with aluminum double-joint spring-strut axle and
M-specific elastokinematics |
Suspension, rear | | Three-way M coilover
suspension with five-link axle in lightweight construction |
Brakes, front | | M carbon ceramic disc
brakes vented with 6-piston fixed calipers with 15.74 in x
1.49 in front rotors |
Brakes, rear | | M carbon ceramic disc
brakes vented with 4-piston fixed calipers with / 14.96 in x
1.10 in rear rotors. |
Driving stability
systems | | Standard: DSC incl ABS and M Dynamic Mode, CBC
(Cornering Brake Control), DBC (Dynamic Brake Control), Dry
Braking function, Fading Compensation, Start-Off Assistant,
Active M Differential linked to Integrated Chassis Management (ICM) |
Safety equipment | | Standard: airbags for
driver and front passenger, side airbags for driver and front
passenger, head airbags for front seats, three-point
inertia-reel seatbelts on all seats with belt latch tensioner
and belt force limiter |
| | |
Wheels and Tires | | |
Front tires | -- | 265/35 ZR19 |
Front rims | -- | 9,5J x 19 |
Rear tires | -- | 285/30 ZR20 |
Rear rims | -- | 10,5J x 20 |
Track front | inch | 62.8 |
Rear track | inch | 63.1 |
| | |
BMW EfficientDynamics | | |
BMW EfficientDynamics standard
features | | Brake Energy Regeneration, electromechanical
power steering, Automatic Start/Stop function, Optimum
Gearshift Indicator in manual mode, intelligent lightweight
construction, on-demand operation of ancillary units,
map-regulated oil pump, Li-ion battery, differential with
optimized warm-up behaviour, aerodynamics (Air Curtains, Air
Breathers, underside panelling, front spoiler, rear wing with
gurney flap) |
| | |
The new BMW M4 GTS.
Output and torque diagrams.
More Information as well as images and video:
http://www.bmwusanews.com
Twitter.com/BMWUSANews
BMW Group In America
BMW of North America, LLC has been present in the United States since
1975. Rolls-Royce Motor Cars NA, LLC began distributing vehicles in
2003. The BMW Group in the United States has grown to include
marketing, sales, and financial service organizations for the BMW
brand of motor vehicles, including motorcycles, the MINI brand, and
the Rolls-Royce brand of Motor Cars; Designworks, a strategic design
consultancy based in California; a technology office in Silicon Valley
and various other operations throughout the country. BMW
Manufacturing Co., LLC in South Carolina is part of BMW Group’s global
manufacturing network and is the exclusive manufacturing plant for all
X5 and X3 Sports Activity Vehicles and X6 and X4 Sports Activity
Coupes. The BMW Group sales organization is represented in the U.S.
through networks of 340 BMW passenger car and BMW Sports Activity
Vehicle centers, 153 BMW motorcycle retailers, 125 MINI passenger car
dealers, and 36 Rolls-Royce Motor Car dealers. BMW (US) Holding
Corp., the BMW Group’s sales headquarters for North America, is
located in Woodcliff Lake, New Jersey.
# # #
Journalist note: Information about BMW and its
products in the USA is available to journalists on-line at www.bmwusanews.com.
# # #
