Dunlop Winter Sport 5 255/40 R20

Dunlop Winter Sport 5 is a winter tyre made in total of 191 sizes, ranging from R14 to R14 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/40 R20 is 80mm wider than the narrowest dimension (175) and 40mm narrower than the widest one (295). 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, Winter Sport 5 usually competes against Blizzak LM-005, which is a tyre from Bridgestone with a rating of 87%, compared to 86% of the Dunlop in question.