b'HOW TOREAD YOUR TIREAlpha Numeric & P-Metric Style Tire SizesA B C205 / 65 - 10A Tire Width (205) - Width of the tire measured in millimeters from sidewall to sidewall.B Aspect Ratio (65) - Ratio of the height of the tires side to its width. C Wheel Diameter (10) -Distance between thevertical portion of the rim flange. The rim diameter is normally measured in inches.BCAA B C21 X 10.5 - 12A Overall Tire Height (21) - Overall Tire Height is always the first number and is tire height when inflated.B Tire Width (10.5) - Distance between the widest part of the tire when inflated and not under any weight.C Rim Diameter (12) - Distance between the vertical portion of the rim flange. The rim diameter is normally measured in inches. A CB150 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. This WARNING applies to all items that can be ordered on this page.'