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

See also:
Exterior
If you took BMW's Z4, raised it up and lengthened the rear quarters to add
two more doors, you would get something of the X6's profile. The scalloped
headlights, twin kidney grilles and stacked ta ...
New for 2011
A new eight-speed automatic transmission is standard on the 2011 models and
replaces a six-speed automatic. The xDrive35i has BMW's new single-turbo
3.0-liter inline six-cylinder (replacing a twin ...
Interior
The four-seat interior incorporates a shelved dashboard that houses the
navigation display without adding an extra hump in the center, as many BMW
dashboards do. Metallic rings grace the dual-zone ...
