Mercedes-Benz GLK Owners Manual

See also:

Sidewall
The part of the tire between the tread and the bead. ...

Releasing the parking lock manually
In the event of an electrical malfunction, it is possible to release the selector lever lock manually to move it out of position P, e.g. if you wish to tow the vehicle away. Do not use any s ...

Tire ply composition and material used
Describes the number of plies or the number of layers of rubber-coated fabric in the tire tread and sidewall. These are made of steel, nylon, polyester and other materials. ...