Westlake Z-507 255/50 R19

Westlake Z-507 is a winter tyre made in total of 65 sizes, ranging from R16 to R16 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 255/50 R19 is 60mm wider than the narrowest dimension (195) and 20mm narrower than the widest one (275). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (255mm), which results in 127.5mm sidewall height.