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

See also:
Interior: First-class ambience, intelligent functionality.
A generous and versatile spatial concept, high-grade materials and a
characteristic three-dimensional surface design provide the interior of the new
BMW X3 with a modern, premium ambience and inte ...
Actions in the event of a flat tire
Normal tires
1. Identify the damaged tire.
Do this by checking the air pressure in all
four tires.
If the tire inflation pressure in all four tires is
correct, the Tire Pressure Monitor may not ...
Tire inflation pressures up to 100 mph/160 km/h
For speeds of up to 100 mph/160 km/h and for
optimum driving comfort, note the pressure values
in the tire inflation pressure table, and adjust as necessary.
These pressure values can also be f ...
