Superia Bluewin UHP2 is a winter tyre made in total of 26 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/40 R18 is 30mm wider than the narrowest dimension (205) and 20mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (235mm), which results in 94mm sidewall height. In
235/40 R18, Bluewin UHP2 usually competes against
Blizzak LM-005, which is a tyre from
Bridgestone with a rating of 87%, compared to 25% of the
Superia in question.
