Engineering:Gross trailer weight rating

In motor vehicles, the gross trailer weight rating (GTWR) is the total mass of a road trailer that is loaded to capacity, including the weight of the trailer itself, plus fluids, and cargo, that a vehicle is rated to tow by the manufacturer. In the United States and Canada , the static tongue load, the weight of the trailer as measured at the trailer coupling, is generally recommended to be 10-15% of the GTWR. In the United States and Canada , there are four main weight classes of trailer hitches as defined by the Society of Automotive Engineers (SAE):

• Class I — rated to 2,000 pounds (907 kg)
• Class II — rated to 3,500 pounds (1,588 kg)
• Class III — rated to 5,000 pounds (2,268 kg)
• Class IV — rated to 10,000 pounds (4,536 kg)

See also

• Curb weight
• Heavy-duty vehicle
• Light-duty vehicle
• Vehicle category
• Gross axle weight rating (GAWR)
• Gross combined weight rating (GCWR)
• Gross vehicle weight rating (GVWR)
• Corporate Average Fuel Economy (CAFE)
• Truck classification

External links

• Trailer Hitches