Hankook Ventus Prime2 K115 is a summer tyre made in total of 57 sizes, ranging from R15 to R15 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 235/55 R19 is 40mm wider than the narrowest dimension (195) and 10mm narrower than the widest one (245). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (235mm), which results in 129.25mm sidewall height. In 235/55 R19, there are 2 possible speed indexes for Hankook Ventus Prime2 K115 - "H","V", which are good for speeds up to 210, 240 km/h.