Pirelli WINTER 240 SOTTOZERO 255/40 R19

Pirelli WINTER 240 SOTTOZERO is a winter tyre made in total of 15 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 20mm wider than the narrowest dimension (235) and 50mm narrower than the widest one (305). 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.