Toyo Open Country AT+ 275/45 R20

Toyo Open Country AT+ is a summer tyre made in total of 55 sizes, ranging from R13 to R13 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 275/45 R20 is 80mm wider than the narrowest dimension (195) and 20mm narrower than the widest one (295). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (275mm), which results in 123.75mm sidewall height.