Metzeler ME 888 Marathon Ultra 210/40 R18

Metzeler ME 888 Marathon Ultra is a summer tyre made in total of 94 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 210/40 R18 is 70mm wider than the narrowest dimension (140) and -30mm narrower than the widest one (180). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (210mm), which results in 84mm sidewall height.