Toyo Proxes T1R 255/30 R22

Toyo Proxes T1R is a summer tyre made in total of 30 sizes, ranging from R13 to R13 - this particular dimension is R22, which means it fits to a 22 inch/558.8mm diameter wheel. 255/30 R22 is 30mm wider than the narrowest dimension (225) and 40mm narrower than the widest one (295). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (255mm), which results in 76.5mm sidewall height.