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. ...

PSI (pounds per square inch)
A standard unit of measure for tire pressure. ...

C-Class in the Market
Second only to the 3 Series in terms of sales popularity, the C-Class takes a different tack than its BMW rival. The BMW is dynamically talented but, for some, uninvitingly austere; the Benz is so ...