Maxxis Premitra AS AP3 255/40 R20

Maxxis Premitra AS AP3 is a allround tyre made in total of 530 sizes, ranging from R13 to R13 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/40 R20 is 110mm wider than the narrowest dimension (145) and 50mm narrower than the widest one (305). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height.