Continental WinterContact TS 860 is a winter tyre made in total of 73 sizes, ranging from R13 to R13 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 185/55 R15 is 30mm wider than the narrowest dimension (155) and 40mm narrower than the widest one (225). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (185mm), which results in 101.75mm sidewall height. In 185/55 R15, there are 2 possible speed indexes for Continental WinterContact TS 860 - "T","H", which are good for speeds up to 190, 210 km/h. In 185/55 R15, WinterContact TS 860 usually competes against Blizzak LM-005, which is a tyre from Bridgestone with a rating of 88%, compared to 0% of the Continental in question.
