Dunlop SPORTMAX ROADSMART III 190/55 R17

Dunlop SPORTMAX ROADSMART III is a summer tyre made in total of 12 sizes, ranging from R17 to R17 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 190/55 R17 is 40mm wider than the narrowest dimension (150) and -20mm narrower than the widest one (170). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (190mm), which results in 104.5mm sidewall height.