Dunlop SP Winter Sport 4D 255/50 R19

Dunlop SP Winter Sport 4D is a winter tyre made in total of 66 sizes, ranging from R13 to R13 - 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 30mm narrower than the widest one (285). 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.