So, the other day I trailered home an old 1969 F350... i thought that it would be about 8000 pounds but in the end with everything on the trailer it was probably closer to 10k. I know. Yeah. I was careful, and kept the speed reasonable. It was a gorilla wanting to get out of the cage, but if you kept it well inside it was fine. The truck did fantastic. Plenty of power, braking... only issue was making sure you kept it happy laterally and I tried to do most braking in a straight line. Went 400 miles with it, so impressed