If you were to get a 2500hd say 14-15 with a leveling kit you can stick 33's under it all day long. They sit way higher than the 1500's , that's why i traded my 13 1500 in on one. I will be putting 35's under it soon! And it has plenty of power with the 6.0L in it. I also pull a 32' travel trailer with it , no problem. Just made a trip this summer pulling it through the Rockies (Dead Mans Pass) on our way to the west coast. So trust me when i say it has plenty of power. My camper loaded probably weighs about 8000lbs.