Yokohama BluEarth winter V905 255/40 R19

Yokohama BluEarth winter V905 is a winter tyre made in total of 502 sizes, ranging from R13 to R13 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 255/40 R19 is 110mm wider than the narrowest dimension (145) and 60mm narrower than the widest one (315). 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.