The thing behind the lift is most are rated at 24" from the backing plate on the forks and the distance out from that cuts back on the lift due to the tip factor,
Yeah, that's one thing you really need to be aware of when operating anywhere near the edge of the envelope. The distance changes as the arms move through their arc. A couple of us, myself and another operator, had, shall we say, excursions, when unloading lumber from trucks. The machine could lift the load and raise it off the truck bed, but when lowering it, suddenly we were out of balance because the load moved just that little bit further away as the arms were lowered. Or, it might've been just that little bit of extra G force that happens when you change directions, I'm not sure. It happened pretty fast. Fortunately, in both cases, we got the load lowered quickly enough that only our pride was damaged. The point is though, that those machines
will pick up more than they can handle...
On edit:
Can I lift 2500lb pallets off a semi?
Just guessing, but it sounds like you're getting ready for snowplowing season. 49 fifties of rock salt weighs, 2,450, plus the pallet. Am I right?