What is a radial ply tyre?
The radial ply tyre, also known as the steel belt tyre is the latest development in tyres until now. The Michelin brothers patented the steel belt tyre in 1946. This tyre is made with a radial fabric carcass, ie. at a right angle to the direction of travel. This innovation had a positive effect and became standard in the 70s. The radial construction also made it possible to lower the tyre profile to 82% (the relationship between tyre sidewall height and road tread). This noticeably increased the cornering effect and thus also the safety. Through constant improvement of the chassis frame, the tyre profile could later be reduced more and more without reducing travel comfort. Today the normal profile is 30%.
