Size difference between 285/65 R18 and 305/45 R21 tires.
In the tire comparison table above, you can see a detailed calculation of the size difference between 285/65 R18 and 305/45 R21 tire. The calculation results are presented in the form of visual infographics, on which tire with size 285/65 R18 is on top, and tire with size 305/45 R21 below. Both in the table and in the graph, the tires are compared according to the following indicators: overall diameter, section width, circumference, sidewall height and clearance. Also, the online application calculates the difference in real speed and speedometer readings if the difference between tire 285/65 R18 and tire 305/45 R21 is significant. Calculate the difference in inches.
If you want to compare other tire sizes, then select their sizes in the drop-down fields and click on the green button. The online wheel calculator will then display the new results.
