Cooper DISC AT3 SPORT 2 255/70 R15

Cooper DISC AT3 SPORT 2 is a tyre made in total of 9 sizes, ranging from R15 to R15 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 255/70 R15 is 50mm wider than the narrowest dimension (205) and 10mm narrower than the widest one (265). This tyre profile of 70 means the sidewall height of the tyre is 70% of the tyre width (255mm), which results in 178.5mm sidewall height.