Vredestein Ultrac Pro is a summer tyre made in total of 48 sizes, ranging from R18 to R18 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (225mm), which results in 90mm sidewall height. In 225/40 R18, there is only one possible speed index for Vredestein Ultrac Pro - "Y", which is good for speeds up to 300 km/h. In 225/40 R18, Ultrac Pro usually competes against Quatrac Pro+, which is a tyre from Vredestein with a rating of 58%, compared to 71% of the Vredestein in question. Latest test in 225/40 R18 was held by ADAC in 2025, where Ultrac Pro received rating "Good" and finished on the 5. place. It was tested on a VW Golf.
