I finally used the truck I bought last year as a truck. (after filling it up with $104 worth of gas. Ouch) I bought a pallet of concrete blocks. I thought it was about 2500# but it was just a few pounds shy of 3000. The truck really squatted down on the springs when the forklift guy set it way in the back, half in the bed and half on the tailgate. I thought the front tires might come up. The back tires looked good. When he pushed it forward just enough to get it all in the bed (still loaded towards the back) it was fine. The truck even drove well like that; enough acceleration, the steering wasn't squirrelly, and the brakes were good.
Next time I buy a pallet of something heavy I'll take the tailgate off to get it out of the way.
Now it's raining, so too muddy to use a dolly or wheelbarrow to move them, I'll have to carry them one at a time to the backyard, and that's a pretty long way. (I'm too much a wimp now to carry them 2 at a time like I coulda done 15 years ago)