Vredestein Ultrac Satin is a summer tyre made in total of 69 sizes, ranging from R16 to R16 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 255/55 R19 is 50mm wider than the narrowest dimension (205) and -20mm narrower than the widest one (235). 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. In 255/55 R19, there is only one possible speed index for Vredestein Ultrac Satin - "W", which is good for speeds up to 270 km/h. In 255/55 R19, Ultrac Satin usually competes against Bravuris 5 HM, which is a tyre from Barum with a rating of 29%, compared to 0% of the Vredestein in question.