I have an enclosed Haulmark car trailer with interior that is 8' x 20' x 6' 6" high. The floor and ramp are both 3/4" plywood of a good grade, not the newer flake-board, but I have no good information about the ramp's interior construction. The tractor is a B2601 with loader and backhoe and it weighs just about 3,000 pounds. Since the specifications of both the trailer and the tractor are within limits, my question is about the ramp. A car would weigh approximately the same as the tractor, but the wheels are farther apart spreading the load better. I plan on using some 2 x 10 planks over the ramp but still have concerns about overloading it. Does anyone have experience with this type of trailer/ tractor combination?