Semperit Speed-Grip 3 215/40 R17

Semperit Speed-Grip 3 is a winter tyre made in total of 51 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 -20mm narrower than the widest one (195). 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.