The concept
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels.

See also:
BMW TwinPower Turbo technology in the new four-cylinder engine
This new engine is the most powerful in a new generation of four-cylinder
petrol units based on the same reduced-friction core engine, their different
output ratings being achieved principally by ...
xDrive
xDrive is the all-wheel-drive system of your vehicle.
Concerted action by the xDrive and DSC
further optimize traction and driving dynamics.
The xDrive all-wheel-drive system variably distribut ...
Notes
Steam jets or high-pressure washers>?
When using steam jets or high-pressure
washers, hold them a sufficient distance away
and use a maximum temperature of 140 ℉/
60 ℃.
Holdin ...
