Vredestein Wintrac Pro 255/40 R21

Vredestein Wintrac Pro is a winter tyre made in total of 130 sizes, ranging from R17 to R17 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 255/40 R21 is 60mm wider than the narrowest dimension (195) and 70mm narrower than the widest one (325). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In 255/40 R21, Wintrac Pro usually competes against Blizzak LM-005, which is a tyre from Bridgestone with a rating of 82%, compared to 54% of the Vredestein in question.