Metzeler Racetec RR 190/50 R17

Metzeler Racetec RR is a winter tyre made in total of 29 sizes, ranging from R17 to R17 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 190/50 R17 is 50mm wider than the narrowest dimension (140) and -30mm narrower than the widest one (160). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (190mm), which results in 95mm sidewall height.