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

See also:
Driving pleasure
Driving the X6 M changed the way I looked at this vehicle.
Some of that gangly look disappeared as the vehicle's performance matured my
perception. It has a toughness, a meanness too that it didn' ...
General driving notes
Closing the trunk lid
Drive with the trunk lid closed
Only drive with the tailgate closed; otherwise,
in the event of an accident or braking or
evasive maneuvers, passengers or other road
use ...
Brake pedal feel
When the system brakes and you also depress
the brake pedal, a somewhat different braking
feel results. ...
