Vredestein ULTRAC 255/55 R18

Vredestein ULTRAC is a summer tyre made in total of 83 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 255/55 R18 is 80mm wider than the narrowest dimension (175) and 40mm narrower than the widest one (295). 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. Latest test in 255/55 R18 was held by Autobild in 2025, where ULTRAC received rating "Exemplary" and finished on the 2. place. It was tested on a .