Gross Axle Weight Rating (GAWR) is the maximum weight that should be placed on any single axle of a tow vehicle or trailer, as measured at the wheel. Dry Weight is the weight of the RV without any fuel, water, oil, coolant, cargo, or passengers. Gross Combined Weight Rating (GCWR) is the combined weight-carrying capacity of a tow vehicle plus its trailer. Curb Weight is the weight of the RV with fuel, water, oil and coolant, but no passengers or cargo.