Kumho WinterCraft WP72 255/35 R21

Kumho WinterCraft WP72 is a winter tyre made in total of 64 sizes, ranging from R13 to R13 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 255/35 R21 is 30mm wider than the narrowest dimension (225) and 0mm narrower than the widest one (255). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (255mm), which results in 89.25mm sidewall height.