Kumho Ecsta PS71 215/50 R18

Kumho Ecsta PS71 is a summer tyre made in total of 227 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 215/50 R18 is 20mm wider than the narrowest dimension (195) and 100mm narrower than the widest one (315). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (215mm), which results in 107.5mm sidewall height. In 215/50 R18, Ecsta PS71 usually competes against RainSport 5, which is a tyre from Uniroyal with a rating of 65%, compared to 78% of the Kumho in question.