Kumho Ecsta Sport (PS72) 305/35 R20

Kumho Ecsta Sport (PS72) is a summer tyre made in total of 99 sizes, ranging from R17 to R17 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 305/35 R20 is 100mm wider than the narrowest dimension (205) and -20mm narrower than the widest one (285). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (305mm), which results in 106.75mm sidewall height.