How much can a tractor trailer carry?

To get the answer, you need to weigh your tractor trailer empty. When you get that weight, Lets talk numbers, this is wrong but it is a big example. If your tractor trailer is 35,000 pounds empty. Means you can haul about 45,000, as long as you are not overweight on your three axles. Steer, Rear, and trailer axles. 12/34/34.