Radial Tyre

Almost all modern car tyres are radial, shown by the letter R in the size code. The design lets the sidewall flex while the tread stays flat on the road. It gives better grip, lower rolling resistance and longer life than older cross-ply tyres.

Radial plies give a flexible sidewall, while the steel belts keep the tread stiff and in full contact with the road.

Sidewall damage can cut the body cords and cause a bulge or sudden failure. Radial and cross-ply tyres should not be mixed on the same axle.