Kumho Ecsta PS31 is a summer tyre made in total of 58 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/40 R18 is 50mm wider than the narrowest dimension (185) and 40mm narrower than the widest one (275). 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. In
235/40 R18, Ecsta PS31 usually competes against
Advantage, which is a tyre from
BFGoodrich with a rating of 68%, compared to 0% of the
Kumho in question.
