255/45 R20 Nokian Seasonproof variants

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Nokian Seasonproof is a allround tyre made in total of 52 sizes, ranging from R14 to R14 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/45 R20 is 90mm wider than the narrowest dimension (165) and 0mm narrower than the widest one (255). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (255mm), which results in 114.75mm sidewall height. In 255/45 R20, Seasonproof usually competes against HA32 Solus 4S, which is a tyre from Kumho with a rating of 67%, compared to 66% of the Nokian in question.