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What’s in a tyre?

Underneath the black rubber that we see, there are many layers of nylon, steel and rubber that make up the “frame” of the tyre. The architecture of the casing, together with the compounds used as well as the tread pattern all contribute to the performance of the tyre.

These components include natural and synthetic rubber, metal and fabric cords, reinforcing fillers and chemical addictives like carbon black, silica and sulphur.

A tyre is made of raw materials with a wide variety of properties that play different roles, depending on the type of tyre produced.

Rolling resistance and fuel economy

As your car wheels rotate, the tyres have to alter their shape to adapt to the road. If they didn’t, you wouldn’t be able to enjoy the levels of safety, comfort and road-holding you have come to expect.

This reshaping however, serves to slow the car’s momentum, causing part of the energy transmitted by the motor to be lost.

That means out of a full tank of petrol up to one-fifth or 20% is used to counter this phenomenon of physics scientists call “rolling resistance”.

With a set of tyres that minimises rolling resistance, you could save up to an additional 5% on each tank of fuel