Michelin Alpin A4 is a winter tyre made in total of 35 sizes, ranging from R14 to R14 - this particular dimension is R14, which means it fits to a 14 inch/355.6mm diameter wheel. 185/60 R14 is 20mm wider than the narrowest dimension (165) and 40mm narrower than the widest one (225). This tyre profile of 60 means the sidewall height of the tyre is 60% of the tyre width (185mm), which results in 111mm sidewall height. In 185/60 R14, there is only one possible speed index for Michelin Alpin A4 - "T", which is good for speeds up to 190 km/h. In 185/60 R14, Alpin A4 usually competes against Blizzak LM-005, which is a tyre from Bridgestone with a rating of 87%, compared to 0% of the Michelin in question.