System limits

Sudden tire damage
Sudden serious tire damage caused by external influences cannot be indicated in advance.◀

A natural, even pressure loss in all four tires cannot be detected. Therefore, check the tire inflation pressure regularly.

The system could be delayed or malfunction in the following situations:

▷ When the system has not been initialized.
▷ When driving on a snowy or slippery road surface.
▷ Sporty driving style: slip in the drive wheels, high lateral acceleration.
▷ When driving with snow chains.

    See also:

    Safety
    Both the coupe and convertible have front airbags plus side-impact airbags built into the front seats. As required of all 2012 models sold in the U.S., the 640i has standard antilock brakes and an ...

    Switching on/off
    Switching on/off Press the button. ...

    Condensation under the parked vehicle
    When using the automatic climate control, condensation water develops that exits underneath the vehicle. Therefore, traces of condensed water under the vehicle are normal. ...