See also:

Pressure specifications
The tire inflation pressure table, contains all pressure specifications for the specified tire sizes at the ambient temperature. Pressure specifications apply to approved tire sizes and recommen ...

Tire inflation pressure values up to 100 mph/160 km/h
320i 328i 335i ...

Switching off automatically
The system switches off and the LED goes out: After approx. 160 ft/50 m when driving forward. Above approx. 22 mph/36 km/h when driving forward. Switch on the system again if necessary. ...