Continental PremiumContact 2 is a summer tyre made in total of 124 sizes, ranging from R14 to R14 - this particular dimension is R16, which means it fits to a 16 inch/406.4mm diameter wheel. 225/50 R16 is 70mm wider than the narrowest dimension (155) and 10mm narrower than the widest one (235). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (225mm), which results in 112.5mm sidewall height. In 225/50 R16, there are 2 possible speed indexes for Continental PremiumContact 2 - "V","W", which are good for speeds up to 240, 270 km/h.