Linglong Sport Master is a summer tyre made in total of 63 sizes, ranging from R16 to R16 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/40 R20 is 70mm wider than the narrowest dimension (185) and 30mm narrower than the widest one (285). 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. In 255/40 R20, Sport Master usually competes against Victra Sport 5, which is a tyre from Maxxis with a rating of 69%, compared to 64% of the Linglong in question.