Austone Athena SP-303 315/35 R20

Austone Athena SP-303 is a summer tyre made in total of 34 sizes, ranging from R15 to R15 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 315/35 R20 is 90mm wider than the narrowest dimension (225) and -30mm narrower than the widest one (285). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (315mm), which results in 110.25mm sidewall height.