Falken EuroWinter HS01 is a winter tyre made in total of 166 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 235/45 R18 is 80mm wider than the narrowest dimension (155) and 40mm narrower than the widest one (275). 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 is only one possible speed index for Falken EuroWinter HS01 - "V", which is good for speeds up to 240 km/h. In 235/45 R18, EuroWinter HS01 usually competes against KRISALP HP3, which is a tyre from Kleber with a rating of 69%, compared to 53% of the Falken in question.