Maxtrek TREK M7 255/50 R20

Maxtrek TREK M7 is a winter tyre made in total of 26 sizes, ranging from R14 to R14 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/50 R20 is 80mm wider than the narrowest dimension (175) and 10mm narrower than the widest one (265). 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.