Dunlop GRANDTREK WT M3 255/50 R19

Dunlop GRANDTREK WT M3 is a winter tyre made in total of 14 sizes, ranging from R18 to R18 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 255/50 R19 is 20mm wider than the narrowest dimension (235) and 20mm narrower than the widest one (275). 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.