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Help > Tyres > What does ZR mean?

What does ZR mean?

ZR is a category of speed rating. It was first introduced for speeds over 150mph.

Since then car speeds have increased beyond what was believed to be the maximum required. With cars capable of going faster than 150mph, ZR was subdivided into Y, W and the original Z. When buying new tyres double check with the manufacturer's handbook to determine what recommended speed rating you required - W Y or Z.

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