Continental PremiumContact 6 is a summer tyre made in total of 261 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 235/45 R17 is 50mm wider than the narrowest dimension (185) and 90mm narrower than the widest one (325). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (235mm), which results in 105.75mm sidewall height. In 235/45 R17, there are 2 possible speed indexes for Continental PremiumContact 6 - "Y","W", which are good for speeds up to 300, 270 km/h.
