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Thursday 24 April 2014 • 04:02 GMT • Last update 16:46

Radial tyre

All tyres have reinforcing cords or 'plies' under the tread. A radial tyre is so-called because the plies run radially (ie from one sidewall, across the tread, to the other sidewall). This is different to a cross-ply or bias-ply tyre.

Radial tyres are universal on modern cars, because they offer the best combination of grip, handling, ride and tyre life.


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