1 Ton, 2 Ton, Etc. is what is called a Nominal Ton Rating. This is a holdover from the 1920's when it gave you a payload rating for the truck. Today, GVWR (Gross Vehicle Weight Rating) is the definitive rating. It includes the truck, payload, fuel, lubricants, driver and so on. GCWR (Gross Combination Weight Rating) includes the maximum trailer weight along with the truck and load
