March 2026

tires

What does 245 45R18 mean?

What does 245 45R18 mean? The 245/45R18 100W tire has the following features: the first three digits 245 refer to the width of the tire in millimetres. The second two-digit number 45 refers to the ratio between the height of the sidewall and the width of the tire. It’s all about the sidewall – that

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tires

What does ZR18 mean on a tyre?

What does ZR18 mean on a tyre? ZR basically means the tyre is adapted for speeds above 149 mph. ZR tyres includes the speed ratings V(149mph), W(168mph) and Y(186mph). Before 1990, the manufacturers used ZR to mean high performance tyres before the ratings got refined with W, Y… The letters ZR on the sidewall relate

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