Nokian WR A4 275/35 R20

Nokian WR A4 is a winter tyre made in total of 59 sizes, ranging from R16 to R16 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/35 R20 is 70mm wider than the narrowest dimension (205) and -30mm narrower than the widest one (245). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (275mm), which results in 96.25mm sidewall height.