285/40 R22 Nokian Powerproof variants

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Nokian Powerproof is a summer tyre made in total of 53 sizes, ranging from R17 to R17 - this particular dimension is R22, which means it fits to a 22 inch/558.8mm diameter wheel. 285/40 R22 is 80mm wider than the narrowest dimension (205) and -10mm narrower than the widest one (275). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (285mm), which results in 114mm sidewall height. In 285/40 R22, Powerproof usually competes against Roadhawk, which is a tyre from Firestone with a rating of 59%, compared to 51% of the Nokian in question.