Yokohama Advan Winter V907 275/30 R20

Yokohama Advan Winter V907 is a winter tyre made in total of 40 sizes, ranging from R19 to R19 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/30 R20 is 50mm wider than the narrowest dimension (225) and 40mm narrower than the widest one (315). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (275mm), which results in 82.5mm sidewall height.