Hankook Winter i*cept X RW10 255/50 R20

Hankook Winter i*cept X RW10 is a winter tyre made in total of 52 sizes, ranging from R15 to R15 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/50 R20 is 20mm wider than the narrowest dimension (235) and 20mm narrower than the widest one (275). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (255mm), which results in 127.5mm sidewall height.