Kumho WinterCraft WS71 SUV 295/40 R20

Kumho WinterCraft WS71 SUV is a winter tyre made in total of 37 sizes, ranging from R15 to R15 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 295/40 R20 is 40mm wider than the narrowest dimension (255) and -30mm narrower than the widest one (265). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (295mm), which results in 118mm sidewall height.