Giti GitiSport S2+ is a summer tyre made in total of 13 sizes, ranging from R17 to R17 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 275/40 R21 is 50mm wider than the narrowest dimension (225) and -20mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (275mm), which results in 110mm sidewall height.
Summer