Falken EuroWinter HS01 255/40 R17

Falken EuroWinter HS01 is a winter tyre made in total of 312 sizes, ranging from R13 to R13 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 255/40 R17 is 100mm wider than the narrowest dimension (155) and 60mm narrower than the widest one (315). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height.