Goodyear Efficient Grip Performance 235/40 R18

Goodyear Efficient Grip Performance is a summer tyre made in total of 212 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/40 R18 is 60mm wider than the narrowest dimension (175) and -20mm narrower than the widest one (215). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (235mm), which results in 94mm sidewall height.