Dunlop Grandtrek Sj6 225/60 R18

Dunlop Grandtrek Sj6 is a tyre made in total of 7 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/60 R18 is 10mm wider than the narrowest dimension (215) and 10mm narrower than the widest one (235). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (225mm), which results in 135mm sidewall height.