Went to get 25 bags of cement at 66 lbs, it was 1650 lbs in the back of the truck spread out evenly, it sagged but I did not notice any difference in the throttle, or braking or handling you really wouldn't know, it was weird cuz when I saw it loaded I was concerned for about 3 minutes. Fantastic. I think it could have held out for 500 more my only concern would be bottoming out, I don't have any helpers back there. So much torque, you don't notice you have weight. For a half ton this thing can take a load.