Vredestein Ultrac Satin is a summer tyre made in total of 69 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/50 R18 is 30mm wider than the narrowest dimension (205) and 0mm narrower than the widest one (235). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (235mm), which results in 117.5mm sidewall height. In 235/50 R18, there are 2 possible speed indexes for Vredestein Ultrac Satin - "V","Y", which are good for speeds up to 240, 300 km/h. In 235/50 R18, Ultrac Satin usually competes against Bravuris 5 HM, which is a tyre from Barum with a rating of 39%, compared to 0% of the Vredestein in question. Latest test in 235/50 R18 was held by Autobild in 2017, where Ultrac Satin received rating "Satisfactory" and finished on the 9. place. It was tested on a .
