BMW has announced at the 2017 Auto Shanghai the first ever BMW M4 CS, an exclusive special-edition model produced by BMW M GmbH. The BMW M4 CS lines-up between the BMW M4 Coupe with Competition Package and the track-focused BMW M4 GTS.
The 3.0-liter engine raises the output of the BMW M4 Coupe by 29 horsepower, to 454 hp. The M TwinPower Turbo technology allows the M4 CS to dip below the four-second mark for the 0 to 60 mph sprint, stopping the clock at 3.8 seconds (preliminary) while the standard M Driver’s Package raises the electronically limited top speed to 174 mph.
Under the hood are two mono-scroll turbochargers, charge air cooler, High Precision Injection, VALVETRONIC variable valve timing and Double-VANOS fully variable camshaft timing, the inline 6-cylinder engine.
M4 CS is equipped as standard with the 7-speed M Double Clutch Transmission (M DCT) with Drivelogic that has a separate oil cooler and allows for gear changes in factions of a second with no interruption in the flow of power in both automatic and manual mode using the shift paddles on the steering wheel or the center gearshift lever. The long seventh gear helps keep revs low and minimize fuel consumption.
The suspension largely mirrors that of the M4 with Competition Package. The suspension links and wheel carriers at both the front and rear axles are made from forged aluminum and are therefore extremely light, keeping unsprung masses low, improving driving dynamics. Standard is Adaptive M suspension whose geometry has been tuned to deliver optimized performance on both the road and track. All this has been honed on the Nürburgring Nordschleife. Its ’Ring lap time of 7 min. 38 sec. puts the CS in the super-sports car territory.
The DSC (Dynamic Stability Control) system includes M Dynamic Mode (MDM) and the Active M Differential. The control systems for the Adaptive M suspension, DSC and Active M Differential have been tuned to suit the dynamic requirements of the BMW M4 CS, as has the set-up of the electromechanical steering. The driver has the option of adjusting the steering and suspension settings to their personal preferences by selecting one of three driving modes (Comfort, Sport and Sport+) at the touch of a button.
While Comfort mode is particularly well suited to normal road conditions, city driving and short journeys, Sport will be the mode of choice for drivers looking to push on twisty country roads. For drivers heading out to the track, Sport+ mode will pave the way for the fastest lap times, adjusting all the relevant systems to deliver the best possible dynamics. Should the driver get a little too excited, DSC will intervene in an instant. More experienced drivers will find that M Dynamic Mode (MDM) provides a perfect balance of electronic assistance, allowing controlled drifts while still retaining DSC active, ready to intervene if necessary.
The light-alloy wheels (front: 9 J x 19, rear: 10 J x 20) designed exclusively for the M4 CS and fitted as standard with Michelin Pilot Super Sport tires (front: 265/35 R 19, rear: 285/30 R 20) are at home at the racetrack.
The driver-oriented interior has Lightweight M sports seats trimmed in leather/Alcantara sets and the door panel trim are made from compacted natural fibers featuring lightweight door pull loops. The hood, with its characteristic air outlet rearwards of the powerdome, and roof are made from the lightweight, extremely rigid and high-tech carbon fiber-reinforced plastic (CFRP).
The prominent front end, is equipped twin LED headlights and the front apron has large, three-section air intakes. These feed an ample supply of cooling air to the engine, transmission, and the fade-resistant M compound brakes with four-piston fixed calipers at the front and two-piston fixed calipers at the rear. The new model-specific front splitter is made from carbon fiber exclusively for this special edition. In the interest of aerodynamic efficiency, it teams up with the rear diffuser carried over from the BMW M4 GTS and the newly designed, exposed carbon-fiber Gurney spoiler lip on the trunk lid to minimize lift. Innovative rear lights with OLED (Organic Light Emitting Diode) technology introduced by BMW M GmbH exclusively for the M4 CS and M4 GTS provide a distinctive look. The front splitter, Gurney and rear diffuser, together with the long CFRP hood, M exterior mirrors and muscular wheel arches, allow the first ever BMW M4 CS to cut an extremely dynamic figure, even when it’s standing still.
The BMW M4 CS will be built at the BMW plant in Munich and will be available at U.S. dealerships in 2018 with pricing announced closer to market launch.
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