Kumho Ecsta PS71 275/45 R21

Kumho Ecsta PS71 is a summer tyre made in total of 227 sizes, ranging from R16 to R16 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 275/45 R21 is 80mm wider than the narrowest dimension (195) and 40mm narrower than the widest one (315). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (275mm), which results in 123.75mm sidewall height. In 275/45 R21, 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.