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

See also:
Self-leveling suspension
The concept
The self-leveling suspension keeps the vehicle
height and ground clearance constant. The
height of the vehicle at the rear axle is maintained
at a predefined level under all load co ...
Head airbags
In a lateral impact, the head airbag supports the
head. ...
1 Series M
Rather than the single-turbo setup from the 135i, the 1 Series M gets a
twin-turbo six-cylinder that's good for 335 hp and 332 pounds-feet of torque. In
extreme situations, the 1 Series M can ente ...
