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

See also:
2010 BMW X5 M Review
On paper, the BMW X5 M seems about as incongruous as a car can be. It's a
five-seat midsize crossover powered by a 555-horsepower, twin-turbocharged V-8
engine that can accelerate from zero to 60 ...
Vehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e ...
Services offered
▷ Emergency Request: when you press the
SOS button, a connection to the BMW Assist
Response Center is established. The
BMW Assist Response Center then speaks
with you and takes further s ...
