When you build a house you make sure the
foundations are strong and suitable for the construction that’s going on top.
It’s the same with tyres. You might be surprised to learn that while the tread is critical it’s the carcass that accounts for up to
70% of the tyres performance. What you can’t see under the tread is a
foundation that the tread sits on. The layers of rubber based compounds steel
and polyester cords all joined to the sidewall which has its own construction
elements. It all comes together to form the carcass of the tyre. It’s the
strength of the carcass that keeps the tyre firmly and squarely on the road and
running balanced and true.