GT Radial Champiro WinterPro HP 225/45 R18

GT Radial Champiro WinterPro HP is a winter tyre made in total of 29 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/45 R18 is 20mm wider than the narrowest dimension (205) and 30mm narrower than the widest one (255). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (225mm), which results in 101.25mm sidewall height. In 225/45 R18, Radial Champiro WinterPro HP usually competes against Aspire XP Winter, which is a tyre from Apollo with a rating of 49%, compared to 39% of the GT in question.