Overkill is good. I load my Polaris RZR in my pickup. It weighs right at 1000lb. I had a pair of folding ramps rated for 1500lb break. On 1 of them, all 3 of the aluminum rails sheared off right at the hinges.
I now have a pair of these ramps, rated for 2500lb. These are from Amazon. You can likely find them cheaper elsewhere. I bought mine locally. They have double bars in the middle and no weak hinges.
2500lb RAMPS