Toyo Proxes T1 Sport 305/25 R20

Toyo Proxes T1 Sport is a summer tyre made in total of 19 sizes, ranging from R16 to R16 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 305/25 R20 is 80mm wider than the narrowest dimension (225) and 0mm narrower than the widest one (305). This tyre profile of 25 means the sidewall height of the tyre is 25% of the tyre width (305mm), which results in 76.25mm sidewall height.