Uniroyal WinterExpert is a winter tyre made in total of 91 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/55 R18 is 60mm wider than the narrowest dimension (165) and 50mm narrower than the widest one (275). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (225mm), which results in 123.75mm sidewall height. In 225/55 R18, there is only one possible speed index for Uniroyal WinterExpert - "V", which is good for speeds up to 240 km/h.
Autobild Winter tyre test 2023 225/45 R18 satisfactory Ranked #12 of 20Finishing 12th among 20 competitors, the Uniroyal WinterExpert tire was awarded a final rating of 'Satisfactory.' The tire gained recognition for its balanced handling on both snowy and wet surfaces, alongside an impressive price-performance ratio. However, its performance was marked by extended braking distances on dry roads, highlighting an area for potential improvement. Notably, there were no specific disciplines where the tire outperformed all others, nor were there categories in which it ranked last, underscoring its overall satisfactory and balanced performance in varied winter conditions.