Toyo Proxes T1 Sport is a summer tyre made in total of 7 sizes, ranging from R16 to R16 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 235/45 R17 is 10mm wider than the narrowest dimension (225) and 40mm narrower than the widest one (275). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (235mm), which results in 105.75mm sidewall height. In 235/45 R17, Proxes T1 Sport usually competes against Powerproof, which is a tyre from Nokian with a rating of 51%, compared to 0% of the Toyo in question.