See also:

Tire inflation pressure X6 xDrive35i
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Changing wheels
Your BMW is equipped with run-flat tires as standard. This eliminates the need to change a wheel immediately in the event of a puncture. For information on continuing to drive with a damaged tire, ...

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. ...