Tire Safety Information Determine the empty weight of your trailer by weighing the trailer using a 39 public scale or other means. Locate the GVWR (Gross Vehicle Weight Rating) of the trailer on your trailer’s VIN (Certification) label. Subtract the empty weight of your trailer from the GVWR stated on the VIN label. That weight is the maximum available cargo capacity of the trailer and may not be safely exceeded. 3.3 STEPS FOR DETERMINING CORRECT LOAD LIMIT – TOW VEHICLE Locate the statement, “The combined weight of occupants and cargo should never exceed XXX lbs.,” on your vehicle’s placard. Determine the combined weight of the driver and passengers who will be riding in your vehicle. Subtract the combined weight of the driver and passengers from XXX kilograms or XXX pounds. The resulting figure equals the available amount of cargo and luggage capacity. For example, if the “XXX” amount equals 1400 lbs. and there will be five 150 lb. passengers in your vehicle, the amount of available cargo and luggage capacity is 650 lbs. (1400-750 (5 x 150) = 650 lbs.). Determine the combined weight of luggage and cargo being loaded on the vehicle. That weight may not safely exceed the available cargo and luggage capacity calculated in previous step. If your vehicle will be towing a trailer, load from your trailer will be transferred to your vehicle. Consult the tow vehicle’s manual to determine how this weight transfer reduces the available cargo and luggage capacity of your vehicle. 3.4 GLOSSARY OF TIRE TERMINOLOGY Accessory weight The combined weight (in excess of those standard items which may be replaced) of automatic transmission, power steering, power brakes, power windows, power seats, radio and heater, to the extent that these items are available as factory-installed equipment (whether installed or not). Bead The part of the tire that is made of steel wires, wrapped or reinforced by ply cords and that is shaped to fit the rim. Bead separation This is the breakdown of the bond between components in the bead. Bias ply tire A pneumatic tire in which the ply cords that extend to the beads are laid at alternate angles substantially less than 90 degrees to the centerline of the tread. Carcass The tire structure, except tread and sidewall rubber which, when inflated, bears the load.
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