Dunlop SP WINTER SPORT 3D 285/35 R20

Dunlop SP WINTER SPORT 3D is a winter tyre made in total of 145 sizes, ranging from R13 to R13 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 285/35 R20 is 100mm wider than the narrowest dimension (185) and -10mm narrower than the widest one (275). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (285mm), which results in 99.75mm sidewall height.