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

See also:
Tire inflation pressure values up to 100 mph/160 km/h
320i
328i
335i
...
System limits
Speed range
Best results are achieved when using the system
on well-developed roads and highways.
The desired speed can be selected between
20 mph/30 km/h to 110 mph/180 km/h.
The system can al ...
Switching on automatically
Select transmission position R with the engine
running.
The Top View and PDC images are displayed if
the system is switched on via iDrive. ...
