Radar Dimax R8+ 275/30 R21

Radar Dimax R8+ is a summer tyre made in total of 147 sizes, ranging from R13 to R13 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 275/30 R21 is 60mm wider than the narrowest dimension (215) and 20mm narrower than the widest one (295). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (275mm), which results in 82.5mm sidewall height.