Dunlop SP Sport MAXX TT is a summer tyre made in total of 22 sizes, ranging from R16 to R16 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 225/50 R17 is 30mm wider than the narrowest dimension (195) and 20mm narrower than the widest one (245). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (225mm), which results in 112.5mm sidewall height. In 225/50 R17, there is only one possible speed index for Dunlop SP Sport MAXX TT - "W", which is good for speeds up to 270 km/h. In 225/50 R17, SP Sport MAXX TT usually competes against , which is a tyre from with a rating of %, compared to 0% of the Dunlop in question.