Pirelli P ZERO Rosso 255/40 R19

Pirelli P ZERO Rosso is a summer tyre made in total of 45 sizes, ranging from R16 to R16 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 255/40 R19 is 50mm wider than the narrowest dimension (205) and 40mm narrower than the widest one (295). 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.