Kumho AT61 255/75 R15

Kumho AT61 is a summer tyre made in total of 6 sizes, ranging from R15 to R15 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 255/75 R15 is 50mm wider than the narrowest dimension (205) and 10mm narrower than the widest one (265). This tyre profile of 75 means the sidewall height of the tyre is 75% of the tyre width (255mm), which results in 191.25mm sidewall height.