Metzeler Sportec M9 RR 190/50 R17

Metzeler Sportec M9 RR is a summer tyre made in total of 14 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 80mm wider than the narrowest dimension (110) and 10mm narrower than the widest one (200). 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.