Rotalla Setula W Race S330 is a winter tyre made in total of 34 sizes, ranging from R18 to R18 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 255/40 R20 is 40mm wider than the narrowest dimension (215) and 40mm narrower than the widest one (295). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In
255/40 R20, Setula W Race S330 usually competes against
Blizzak LM-005, which is a tyre from
Bridgestone with a rating of 87%, compared to 13% of the
Rotalla in question.
