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. 245/30 R20 is 10mm wider than the narrowest dimension (235) and 60mm narrower than the widest one (305). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (245mm), which results in 73.5mm sidewall height. In 245/30 R20, there is only one possible speed index for Vredestein Ultrac Vorti R - "Y", which is good for speeds up to 300 km/h. Latest test in 245/30 R20 was held by Autobild in 2018, where Ultrac Vorti R received rating "Exemplary" and finished on the 2. place. It was tested on a .