Uniroyal WinterExpert 225/40 R18

Uniroyal WinterExpert is a winter tyre made in total of 100 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/40 R18 is 60mm wider than the narrowest dimension (165) and 50mm narrower than the widest one (275). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (225mm), which results in 90mm sidewall height. In 225/40 R18, WinterExpert usually competes against KRISALP HP3, which is a tyre from Kleber with a rating of 80%, compared to 81% of the Uniroyal in question. Latest test in 225/40 R18 was held by Autobild in 2025, where WinterExpert received rating "Good" and finished on the 8. place. It was tested on a BMW M135i.