Continental ContiWinterContact TS 850P is a winter tyre made in total of 0 sizes, ranging from R to R - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 205/45 R17 is 205mm wider than the narrowest dimension () and -205mm narrower than the widest one (). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (205mm), which results in 92.25mm sidewall height.