Continental WinterContact TS 870 P 255/30 R19

Continental WinterContact TS 870 P is a winter tyre made in total of 222 sizes, ranging from R16 to R16 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 255/30 R19 is 50mm wider than the narrowest dimension (205) and 30mm narrower than the widest one (285). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (255mm), which results in 76.5mm sidewall height.