I've hauled my Lance 921 on my '97 SWR F350 for the last 12 years with no issues. The camper ended up weighing 4600 lbs all loaded down with fluids and gear, which is quite a bit higher than the dry weight. As has been said, the rear axle can carry the weight, but the limiting factor is the tires. I went to 19.5's with 245/70 load range G tires, 4500 lb per tire, and did not have any issues. I also nearly all the time pullad a car trailer. I would not, however, go any heavier than that. BTW, the sticker on the trucks for rear axle load rating is the tires. You can look up your actual axle rating if you search for it.