GVWR (gross vehicle weight rating)
This rating is established by the manufacturer, it represents the maximum weight of the vehicle, including its cargo.
GCWR (gross combination weight rating)
The weight is determined by adding the weight of each vehicle constituting the cluster, for example, a tractor and its trailer or a tractor-trailer and its skiff.
GAWR (gross axle weight rating)
The weight is established by the manufacturer, it represents the maximum weight that the axel can support. It implies that the weight is evenly distributed across the axels.
UVW (unloaded vehicle weight)
Consist of the empty vehicle. By empty we include the weight of all its components, including a full tank of gas, oils and cooling agents. The weight does not include drinking water, propane gas, personal effects, the occupants or any other accessories added by the dealer or the owner after purchase.
NCC (net carrying capacity)
Since 1996, manufacturers established that this charge represents the sum of the occupant’s weight, their belonging, food, drinking water, propane, tools and accessories added by the dealer or the owner .The net carrying capacity is obtained by subtracting the UVW from the GCWR, in other words, the unloaded vehicle weight is subtracted from the gross combination weight rating. If by example the net carrying capacity obtained is 1500 pounds, the weight still has to be evenly distributed respecting the axle’s capacity. Tire pressure and maintenance also have a direct link with vehicles charge capacity.
If you are unable to find the sticker which has been placed in all vehicles since 1996, ask for it at your local dealer.