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. ...

Important notes on tire pressure
WARNING Should the tire pressure drop repeatedly: check the tire for foreign bodies. check whether the wheel is losing air or the valve is leaking. make sure that only a valve cap approv ...

Notes on selecting, mounting and replacing tires
Only mount tires and wheels of the same type and make. Only mount tires of the correct size onto the wheels. After mounting new tires, run them in at moderate speeds for the first 60 miles ( ...