Goodyear UltraGrip is a winter tyre made in total of 12 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 255/55 R18 is 20mm wider than the narrowest dimension (235) and 0mm narrower than the widest one (255). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (255mm), which results in 140.25mm sidewall height. In
255/55 R18, UltraGrip usually competes against
SportContact 5 SUV, which is a tyre from
Continental with a rating of 0%, compared to 0% of the
Goodyear in question.
