Tristar Snowpower UHP is a winter tyre made in total of 61 sizes, ranging from R14 to R14 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/40 R18 is 50mm wider than the narrowest dimension (175) and 70mm narrower than the widest one (295). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (225mm), which results in 90mm sidewall height. In
225/40 R18, Snowpower UHP usually competes against
UltraGrip Performance+, which is a tyre from
GoodYear with a rating of 90%, compared to 0% of the
Tristar in question.
Winter
