My 26' Pace is rated at 12,000lbs and the ramp door is rated at 7,000. I never had anything with more weight than 2-2,500 lbs on one axle go over it. I back my car 1/2-way out and put it on jackstands on the ramp door to rotate tires and work on the breaks, but that's still light.
I suppose you could custom build it to specs, but it would be heavy and expensive. And pray that the door cables never pop!
What about a pair of swing-out doors with heavy steel ramps that fold up behind them, like on the flatbed trailers that haul big machinery?
Then there's another problem.......will you have enough room between the trailer wheel tubs for the 2500/3500 tires/track to fit in between? I hauled a 2005 Dakota once and it was a close fit everywhere.
