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

See also:
Label
Run-flat tires
RSC label on the tire sidewall.
The wheels are composed of special rims and
tires that are self-supporting, to a limited degree.
The support of the sidewall allows the tire to re ...
Safety belts
Seats with safety belt
The vehicle has five seats, each of which is
equipped with a safety belt.
Notes
Always make sure that safety belts are being
worn by all occupants before driving away.
...
Parts and Accessories
For your own safety, use genuine parts and accessories
approved by BMW. When you purchase
accessories tested and approved by
BMW and Genuine BMW Parts, you simultaneously
acquire the assurance ...
