Dunlop Sportmax Roadsmart IV 170/60 R18

Dunlop Sportmax Roadsmart IV is a allround tyre made in total of 10 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 170/60 R18 is 30mm wider than the narrowest dimension (140) and 0mm narrower than the widest one (170). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (170mm), which results in 102mm sidewall height.