Dunlop SP Sport MAXX GT is a summer tyre made in total of 136 sizes, ranging from R13 to R13 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 255/40 R21 is 20mm wider than the narrowest dimension (235) and 60mm narrower than the widest one (315). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In
255/40 R21, SP Sport MAXX GT usually competes against
SportContact 6, which is a tyre from
Continental with a rating of 0%, compared to 0% of the
Dunlop in question.
Summer
