See also:

Tire inflation pressures at max. speeds above 100 mph/160 km/h
Speeds above 100 mph/160 km/h In order to drive at maximum speeds in excess of 100 mph/160 km/h, please observe, and, if necessary, adjust tire pressures for speeds exceeding 100 mph/160 km/h ...

Switching on/off
Press the button ...

BMW Maintenance System
The maintenance system directs you to required maintenance measures and thereby supports you in maintaining road safety and the operational reliability of the vehicle. ...