Hankook Ventus Prime2 K115 is a summer tyre made in total of 57 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/45 R18 is 40mm wider than the narrowest dimension (195) and 10mm narrower than the widest one (245). 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 R18, there are 2 possible speed indexes for Hankook Ventus Prime2 K115 - "V","W", which are good for speeds up to 240, 270 km/h.
