Continental WinterContact TS 870 is a winter tyre made in total of 52 sizes, ranging from R14 to R14 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 195/45 R17 is 20mm wider than the narrowest dimension (175) and 30mm narrower than the widest one (225). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (195mm), which results in 87.75mm sidewall height. In 195/45 R17, there is only one possible speed index for Continental WinterContact TS 870 - "", which is good for speeds up to km/h. In 195/45 R17, WinterContact TS 870 usually competes against WinterContact TS 860, which is a tyre from Continental with a rating of 90%, compared to 91% of the Continental in question.