Riken Maystorm2 B2 215/40 R17

Riken Maystorm2 B2 is a tyre made in total of 23 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 215/40 R17 is 30mm wider than the narrowest dimension (185) and 30mm narrower than the widest one (245). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (215mm), which results in 86mm sidewall height.