What do the different “Weight Rating” abbreviations mean?


The Recreational Vehicle Industry Association (RVIA) has adopted the following definitions:

  • GVWR (Gross Vehicle Weight Rating) means the maximum weight limit of the unit. The GVWR is equal to or greater than the sum of the Unloaded Vehicle Weight plus the Net Carrying Capacity.
  • UVW (Unloaded Vehicle Weight) is the weight of the unit as built at the factory. This includes full fuel tanks, full generator fuel tanks, engine oil and coolants (if applicable). The UVW does NOT include cargo, fresh water, LP gas or dealer-installed accessories.
  • NCC (Net Carrying Capacity) is the maximum weight of all personal belongings food, fresh water, LP gas, tools, dealer-installed accessories and other items that can be carried by the unit.
  • GCWR (Gross Combined Weight Rating) is the value specified as the maximum allowable loaded weight of a tow vehicle and a towed trailer or towed vehicle.