GT Radial Champiro HPY 245/45 R17

GT Radial Champiro HPY is a summer tyre made in total of 9 sizes, ranging from R17 to R17 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 245/45 R17 is 30mm wider than the narrowest dimension (215) and -10mm narrower than the widest one (235). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (245mm), which results in 110.25mm sidewall height.