Nexen WinGuard Sport 215/40 R18

Nexen WinGuard Sport is a winter tyre made in total of 48 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 215/40 R18 is 30mm wider than the narrowest dimension (185) and 60mm narrower than the widest one (275). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (215mm), which results in 86mm sidewall height.