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

See also:
Service contract
▷ After your contract with BMW Assist has expired,
the BMW Assist system can be deactivated
by the service center without you
having to visit a workshop.
After deactivation, an Emergency ...
Closing the windows and glass
sunroof/panoramic glass sunroof
Driving with the glass sunroof/panoramic glass
sunroof and windows open results in increased
air resistance and raises fuel consumption. ...
Car washes
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 ℃.
Holdi ...
