Section width-10.00 (inch) - The distance between the outside of a tire sidewalls, not including any lettering or designs. Construction- R (Radial)- Radial construction tire. Rim diameter- 20 (inch) - Diameter of rim seat supporting the tire bead. Load index- 146 (3000kg/6610lbs)- Maximum load each tire is designed to carry when inflated to the recommended pressure. Load index dual- 143 (2725kg/6005lbs)- Maximum load each tire is designed to carry when inflated to the recommended pressure in dual operation. Speed Rating- K (110km/h/68mph)- Maximum speed at which a tire can roll with the load indicated in its load index. Load range- H (16 ply)- Maximum load capacity the tire is engineered to handle at certain inflation pressures. It also define the tire toughness and the strength of the sidewall. TL/TT- TT (Tube-type)- Tire specifically designed for fitting to appropriate wheel rims with an inner tube. Manufacturer part number- 3001909- Alpha-numeric designation assigned by a manufacturer to uniquely identify a tire product.