Radar Dimax R8+ 305/40 R22

Radar Dimax R8+ is a summer tyre made in total of 147 sizes, ranging from R13 to R13 - this particular dimension is R22, which means it fits to a 22 inch/558.8mm diameter wheel. 305/40 R22 is 90mm wider than the narrowest dimension (215) and -10mm narrower than the widest one (295). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (305mm), which results in 122mm sidewall height.