GT Radial WinterPro2 Sport 235/50 R18

GT Radial WinterPro2 Sport is a winter tyre made in total of 55 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/50 R18 is 30mm wider than the narrowest dimension (205) and 0mm narrower than the widest one (235). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (235mm), which results in 117.5mm sidewall height.