Important question (to me). Owner's manual isn't really being very helpful; to figure it from what the manual says I'm going to have to go to a vehicle weigh station. Some googling has shown a few different answers. And I'm not sure of the exact weights of some of the things I'll be hauling this year. 1999 F-150 Super Cab 5.4 V8 engine. The best information I've found online shows I should be able to safely put 2000lb in the bed, with another 3300lb on tow. I recently took a cubic yard of #5 stone in two loads; the vendor indicated each half cubic yard was about 1500lbs. The truck rode and ran fine with that in the bed. Volume wise 1.5 cubic yards of stone will fit without spilling, but with something like stone I know it's much more about the weight than the volume. So I'm looking for any comments on what people have hauled in their F-150s, so I can get a better feel for what I can do. Stone and occasionally pavers are going to be the heaviest things I'll be hauling; I'm not really concerned with overloading (weight wise) with material like mulch. But any comments would be useful if someone with an experience to relate could take the time to dash off a post. Thanks in advance.