Vredestein Ultrac Vorti R is a summer tyre made in total of 13 sizes, ranging from R19 to R19 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (235mm), which results in 70.5mm sidewall height. In 235/30 R20, there is only one possible speed index for Vredestein Ultrac Vorti R - "Y", which is good for speeds up to 300 km/h. In 235/30 R20, Ultrac Vorti R usually competes against Azenis FK510, which is a tyre from Falken with a rating of 74%, compared to 70% of the Vredestein in question.