See also:

Weights
Never exceed either the approved axle loads or the gross vehicle weight. ...

Safety
The xDrive50i has upgraded brakes with aluminum calipers. BMW's Integrated Chassis Management coordinates the Dynamic Performance Control differential with stability and traction control systems t ...

The concept
The system is functional at speeds beginning at approx. 20 mph/30 km/h. It maintains the speed that was set using the control elements on the steering wheel. The system brakes on downhill gradie ...