Falken EuroWinter HS01 is a winter tyre made in total of 359 sizes, ranging from R13 to R13 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/45 R18 is 70mm wider than the narrowest dimension (155) and 90mm narrower than the widest one (315). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (225mm), which results in 101.25mm sidewall height. In 225/45 R18, there are 3 possible speed indexes for Falken EuroWinter HS01 - "T","V","W", which are good for speeds up to 190, 240, 270 km/h. Latest test in 225/45 R18 was held by Autobild in 2021, where EuroWinter HS01 received rating "Satisfactory" and finished on the 9. place. It was tested on a Mercedes-Benz C.