Hankook Ventus Prime4 K135 is a summer tyre made in total of 52 sizes, ranging from R16 to R16 - this particular dimension is R16, which means it fits to a 16 inch/406.4mm diameter wheel. 225/55 R16 is 30mm wider than the narrowest dimension (195) and -30mm narrower than the widest one (195). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (225mm), which results in 123.75mm sidewall height. In 225/55 R16, there are 2 possible speed indexes for Hankook Ventus Prime4 K135 - "W","Y", which are good for speeds up to 270, 300 km/h. In 225/55 R16, Ventus Prime4 K135 usually competes against Cinturato P7, which is a tyre from Pirelli with a rating of 75%, compared to 0% of the Hankook in question.