Vredestein ULTRAC is a summer tyre made in total of 49 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/55 R18 is 60mm wider than the narrowest dimension (175) and 60mm narrower than the widest one (295). 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, there is only one possible speed index for Vredestein ULTRAC - "", which is good for speeds up to km/h. In 235/55 R18, ULTRAC usually competes against PremiumContact 7, which is a tyre from Continental with a rating of 99%, compared to 26% of the Vredestein in question. Latest test in 235/55 R18 was held by Automotorsport in 2024, where ULTRAC received rating "Very good" and finished on the 3. place. It was tested on a Seat Tarraco.
Relevant tyre tests in same or similiar dimension (235/55 R18)
Automotorsport Summer tyre test 2024 235/55 R18 very good Ranked #3 of 8Securing a commendable third place among eight contenders, the Vredestein ULTRAC tire demonstrated an impressive performance, ultimately earning a final rating of "Very Good". This tire stood out particularly for its exceptional grip and easy manageability on wet surfaces, ensuring reliability during heavy rain and showcasing superior safety against aquaplaning. On dry asphalt, it offered benign handling characteristics, contributing to a confident driving experience. Despite these strengths, certain limitations were noted, including sensitivity to load changes and a tendency for a slightly unstable rear during rapid lane changes, alongside minor compromises in ride comfort due to some roughness. Notably, this tire excelled in aquaplaning resistance in longitudinal tests, outperforming its competitors in this specific discipline and reinforcing its status as a dependable choice for rainy conditions.