Vredestein Ultrac+ 215/50 R18

Vredestein Ultrac+ is a summer tyre made in total of 87 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 215/50 R18 is 40mm wider than the narrowest dimension (175) and -20mm narrower than the widest one (195). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (215mm), which results in 107.5mm sidewall height.