The concept
The system does not measure the actual inflation pressure in the tires.
It detects a pressure loss in a tire by comparing the rotational speeds of the individual wheels while moving.
In the event of a pressure loss, the diameter and therefore the rotational speed of the corresponding wheel change. This is detected and reported as a flat tire.
See also:
The concept
The parking brake is primarily intended to prevent
the vehicle from rolling while parked; it
brakes the rear wheels.
...
Controls
This chapter is intended to provide you with information for complete control
of your vehicle. All features and accessories that are useful for driving and your
safety, comfort and convenience, ar ...
Tire inflation pressure values over100 mph/160 km/h
X3 28i
X3 35i
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