Nokian Powerproof 1 is a summer tyre made in total of 54 sizes, ranging from R17 to R17 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/30 R20 is 70mm wider than the narrowest dimension (205) and 0mm narrower than the widest one (275). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (275mm), which results in 82.5mm sidewall height. In
275/30 R20, Powerproof 1 usually competes against
Potenza Sport, which is a tyre from
Bridgestone with a rating of 87%, compared to 69% of the
Nokian in question.
Summer
