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. ...

Emergency Tensioning Devices, belt force limiters
The front seat belts and the outer seat belts in the rear are equipped with ETDs and seat belt force limiters. The ETDs tighten the seat belts in an accident, pulling them close against the body. ...

Important safety notes
WARNING Only use carriers when the basic carrier bars have been completely mounted. The left and right roof rails are only stabilized by means of the basic carrier bars mounted. Follow the ma ...