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:

    Parts and Accessories
    For your own safety, use genuine parts and accessories approved by BMW. When you purchase accessories tested and approved by BMW and Genuine BMW Parts, you simultaneously acquire the assurance ...

    Controls
    1. Change entertainment sources 2. Change station/track 3. Programmable memory buttons 4. Volume, on/off 5. Change wave band ...

    Tilt alarm sensor
    The tilt of the vehicle is monitored. The alarm system responds in situations such as attempts to steal a wheel or when the car is towed. ...