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255/40 R20 Nokian WetProof variants
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Nokian WetProof is a summer tyre made in total of 47 sizes, ranging from R14 to R14 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/40 R20 is 80mm wider than the narrowest dimension (175) and -60mm narrower than the widest one (195). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In 255/40 R20, WetProof usually competes against ZIEX ZE310 ECORUN, which is a tyre from Falken with a rating of 75%, compared to 74% of the Nokian in question.
Nokian WetProof is made in 47 sizes, starting from 175/65 R14 up to 195/55 R20.
