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

See also:
Overview
The BMW 3-Series Sedan is the original in the compact sports sedan segment
and over the years has come to symbolise the aesthetic appeal, dynamics and
sporting capability of BMW. With its dynamic ...
X3 in the Market
As you can probably guess by now, the market has caught up with and in many
ways passed the X3. That said, if it weren't for BMW's initiative, this segment
might not even exist today, let alone of ...
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 and 110 mph/180 km/h.
The system can a ...
