Hankook K425 Kinergy Eco is a tyre made in total of 14 sizes, ranging from R13 to R13 - this particular dimension is R16, which means it fits to a 16 inch/406.4mm diameter wheel. 205/55 R16 is 50mm wider than the narrowest dimension (155) and 0mm narrower than the widest one (205). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (205mm), which results in 112.75mm sidewall height. In 205/55 R16, there are 2 possible speed indexes for Hankook K425 Kinergy Eco - "H","V", which are good for speeds up to 210, 240 km/h.