Michelin Primacy 4 is a summer tyre made in total of 383 sizes, ranging from R14 to R14 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 205/45 R17 is 50mm wider than the narrowest dimension (155) and 100mm narrower than the widest one (305). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (205mm), which results in 92.25mm sidewall height. In 205/45 R17, there are 2 possible speed indexes for Michelin Primacy 4 - "H","V", which are good for speeds up to 210, 240 km/h. In 205/45 R17, Primacy 4 usually competes against e.Primacy, which is a tyre from Michelin with a rating of 71%, compared to 77% of the Michelin in question.
