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:
BMW X6 M
The X6 M steps up from the 400-hp, 4.4-liter V-8 to a twin-turbocharged
version making 555 hp. Torque is rated at 500 pounds-feet. BMW says the zero to
60 mph time is 4.5 seconds. A six-speed auto ...
Malfunction
Comfort Access may not function properly if it
experiences interference from external sources
such as mobile phones, metal objects, overhead
power lines, transmission towers, etc.
In this case, ...
Automatic update
About twice a year, Sirius performs an update of
the channel names and positions. The update
takes place automatically and may take several
minutes. ...