Goodyear Wrangler AT/SA+ 255/65 R17

Goodyear Wrangler AT/SA+ is a summer tyre made in total of 10 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 255/65 R17 is 40mm wider than the narrowest dimension (215) and 10mm narrower than the widest one (265). This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (255mm), which results in 165.75mm sidewall height.