Minerva Frostrack UHP is a winter tyre made in total of 67 sizes, ranging from R16 to R16 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 275/45 R21 is 100mm wider than the narrowest dimension (175) and 20mm narrower than the widest one (295). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (275mm), which results in 123.75mm sidewall height. In
275/45 R21, Frostrack UHP usually competes against
Blizzak LM-005, which is a tyre from
Bridgestone with a rating of 87%, compared to 0% of the
Minerva in question.
