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

See also:
Aerodynamic optimisation of underside panelling
As the excellent drag coefficient (cd = 0.26) would suggest, the aerodynamics
of the new BMW 3-Series have been intensively honed in a state-of-the-art wind
tunnel. The optimised aerodynamics also ...
Switching the wipers on/off and brief
wipe
Do not switch on the wipers if frozen
Do not switch on the wipers if they are frozen
onto the windshield; otherwise, the wiper
blades and the windshield wiper motor may be
damaged.◀
Swi ...
Manual transmission
Switching off the engine
1. With the vehicle at a standstill, press the
Start/Stop button.
2. Shift into first gear or reverse.
3. Set the parking brake. ...
