Continental EcoContact 6 305/25 R21

Continental EcoContact 6 is a summer tyre made in total of 622 sizes, ranging from R13 to R13 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 305/25 R21 is 160mm wider than the narrowest dimension (145) and -10mm narrower than the widest one (295). This tyre profile of 25 means the sidewall height of the tyre is 25% of the tyre width (305mm), which results in 76.25mm sidewall height.