Pirelli P ZERO Nero GT 275/30 R19

Pirelli P ZERO Nero GT is a summer tyre made in total of 42 sizes, ranging from R16 to R16 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 275/30 R19 is 80mm wider than the narrowest dimension (195) and 30mm narrower than the widest one (305). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (275mm), which results in 82.5mm sidewall height.