Kumho Ecsta PS91 245/40 R18

Kumho Ecsta PS91 is a summer tyre made in total of 50 sizes, ranging from R18 to R18 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/40 R18 is 20mm wider than the narrowest dimension (225) and 30mm narrower than the widest one (275). 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 PS91 usually competes against Bravuris 5 HM, which is a tyre from Barum with a rating of 44%, compared to 36% of the Kumho in question.