Kumho WinterCraft WP72 275/40 R18

Kumho WinterCraft WP72 is a winter tyre made in total of 50 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 275/40 R18 is 50mm wider than the narrowest dimension (225) and -20mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (275mm), which results in 110mm sidewall height.