Continental WinterContact TS 860 is a winter tyre made in total of 73 sizes, ranging from R13 to R13 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 215/50 R17 is 60mm wider than the narrowest dimension (155) and 10mm narrower than the widest one (225). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (215mm), which results in 107.5mm sidewall height. In 215/50 R17, WinterContact TS 860 usually competes against ALPIN 6, which is a tyre from Michelin with a rating of 69%, compared to 64% of the Continental in question.