See also:

Bead
The tire bead ensures that the tire sits securely on the wheel. There are several steel wires in the bead to prevent the tire from coming loose from the wheel rim. ...

Service and literature
Your vehicle is covered under the terms of the warranties printed in the Service and Warranty Information booklet. Your authorized Mercedes-Benz Center will exchange or repair any defective parts ...

Tire pressure of at least 180 kPa(1.8 bar/26 psi) is not reached
If, after five minutes, a pressure of 180 kPa (1.8 bar/26 psi) has not been achieved: ► Press the on/off switch on the tire inflation compressor to 0. The tire inflation compressor is ...