Nokian WR SUV 4 is a winter tyre made in total of 69 sizes, ranging from R16 to R16 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/60 R20 is 60mm wider than the narrowest dimension (215) and 40mm narrower than the widest one (315). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (275mm), which results in 165mm sidewall height.
Winter
Winter
