GoodYear Eagle F1 Asymmetric SUV AT 255/55 R20

GoodYear Eagle F1 Asymmetric SUV AT is a summer tyre made in total of 21 sizes, ranging from R17 to R17 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/55 R20 is 20mm wider than the narrowest dimension (235) and 30mm narrower than the widest one (285). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (255mm), which results in 140.25mm sidewall height.