GT Radial Champiro WinterPro HP 255/55 R18

GT Radial Champiro WinterPro HP is a winter tyre made in total of 37 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 255/55 R18 is 50mm wider than the narrowest dimension (205) and 0mm narrower than the widest one (255). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (255mm), which results in 140.25mm sidewall height. In 255/55 R18, Radial Champiro WinterPro HP usually competes against Aspire XP Winter, which is a tyre from Apollo with a rating of 53%, compared to 53% of the GT in question.