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Innovation and technology 30 | 31 Chassis. A solid foundation for superior driving dynamics. The intelligent all-wheel xDrive system adapts perfectly to even the most challenging road surface conditions, always offering outstanding traction. With xDrive and Dynamic Stability Control (DSC), the vehicle remains directionally stable and on track. Split second response times allow xDrive to distribute drive power flexibly between the two axles for optimum grip. In this way, xDrive combines the advantages of all-wheel drive – traction, directional stability and safety – with classic BMW agility. The rear-wheel drive forms the basis for classic BMW steering precision, agility and sporty driving characteristics. Seeing as propulsion comes from the rear instead of the front wheels, it enables highly sensitive steering and the ideal weight distribution of :. This ensures great traction and directional stability on bends. The optional automatic eight-speed Steptronic Sport transmission adapts to suit individual driving styles. It ranges from comfortable cruising to very dynamic handling. In SPORT mode, the gear shifts are configured for maximum performance. It is also possible to change gears manually by using the gear lever or the gearshift paddles on the steering wheel. The optional Adaptive M suspension includes variable damper control. The driver can choose between comfortable or dynamic suspension settings using the Driving Experience Control. The suspension has been lowered by mm in order to emphasise the car's sporty appearance and further increase agility. The optional variable sport steering with Servotronic creates a direct and agile steering response and ensures less physical effort is required to turn the wheel. It reacts to the angle of the steering wheel with varying steering ratios. This improves handling when driving more dynamically and makes parking and turning easier. An ideal axle load distribution of : helps ensure great directional stability, agile handling and a precise steering response. A lower centre of gravity, along with a long wheelbase with short overhangs, generates optimal conditions for these positive driving characteristics.