GT Radial Champiro WinterPro HP 245/40 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. 245/40 R18 is 40mm wider than the narrowest dimension (205) and 10mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (245mm), which results in 98mm sidewall height. In 245/40 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.