You can choose from these 305/55 R20 tyre brands: BF Goodrich, Falken, General, Radar, RoadX.
305 (Width in millimeters)
305 is the tyre width expressed in millimeters and measured (from the widest point of its outer sidewall to the widest point of its inner sidewall) from shoulder to shoulder. Before buying the tyre it is essential to check that your cars supports the tyres listed on this page, which are 305 wide.
55 (Shoulder, height or profile in percent)
55 is the second value reported in the tyre, and represents the aspect ratio or series of the tyre, that is the height of the sidewall of the tyre. It is not expressed in millimeters but as a percentage of the width of the tyre. For example, for tyres with a width of 305 and shoulder 55, the measurement is 168 millimeters (305 x 55 / 100).
20 (Rim diameter in inches)
20 is the diameter (expressed in inches) of the rim on which the tyres can be mounted. All tyres listed on this page are specific for 20-inch wheels. In rare cases, this value is expressed in millimeters.
