Sumitomo HTR Z5 235/45 R17

Sumitomo HTR Z5 is a summer tyre made in total of 30 sizes, ranging from R17 to R17 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 235/45 R17 is 30mm wider than the narrowest dimension (205) 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.