Kumho Ecsta Sport (PS72) 245/40 R18

Kumho Ecsta Sport (PS72) is a summer tyre made in total of 99 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/40 R18 is 40mm wider than the narrowest dimension (205) and 40mm narrower than the widest one (285). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (245mm), which results in 98mm sidewall height. In 245/40 R18, Ecsta Sport (PS72) usually competes against Ecsta PS71, which is a tyre from Kumho with a rating of 78%, compared to 84% of the Kumho in question.