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:
Service and Warranty
Information Booklet for US
models and Warranty and
Service Guide Booklet for
Canadian models
Please consult your Service and Warranty Information
Booklet for US models and Warranty and
Service Guide Booklet for Canadian models for
additional information on service requirements.
Mainten ...
Under the Hood
Both engines incorporate direct fuel injection and turbocharging. The
xDrive35i uses a new 3.0-liter inline-six-cylinder with one turbocharger, while
the xDrive50i uses a 4.4-liter V-8 with two. P ...
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 to 110 mph/180 km/h.
The system can al ...