Falken EuroWinter HS02 Pro is a winter tyre made in total of 68 sizes, ranging from R16 to R16 - this particular dimension is R19, which means it fits to a 19 inch/482.6mm diameter wheel. 235/55 R19 is 10mm wider than the narrowest dimension (225) and 0mm narrower than the widest one (235). 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 is only one possible speed index for Falken EuroWinter HS02 Pro - "W", which is good for speeds up to 270 km/h.