GCWR, GCVWR is gross combined vehicle weight rating, the max combined weight you can pull and carry.
GVWR is gross vehicle weight rating, the max weight you can carry. It is not the same as payload and does not include trailer weight.
GTWR is gross trailer weight rating.
Towing capacity explained: https://www.curtmfg.com/towing-capacity
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Curb weight is weight of vehicle.
GAWR is gross axle weight rating.
Tongue weight is downward force on towing ball from trailer.
How to increase towing capacity
upgrade your brakes, axles, radiator, hitch
