Rotalla Setula 4 Season RA03 is a allround tyre made in total of 122 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/55 R18 is 90mm wider than the narrowest dimension (145) and 40mm narrower than the widest one (275). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (235mm), which results in 129.25mm sidewall height. In
235/55 R18, Setula 4 Season RA03 usually competes against
Protech NewGen, which is a tyre from
Viking with a rating of 40%, compared to 74% of the
Rotalla in question.