I have a 2020 3500 with the rear air suspension. Alternative trailer height helps but my fifth wheel is still not level when connected (too high in the front). Looked at increasing trailer tire and wheel size from 15 to sixteen to help leveling it but that only giver me about 1-1/2 inches between top of tire and frame , so no go on that. . I'd like to be able to drop the truck 2 inches instead of the standard 1 inch for the Alt Trailer height setting. Running factory 20 inch wheels with stock LT285/60R20 tires. Any ideas?
Since the trucks don't appear to have any blocks below the spring pack now, you could possibly replace the ball and rod on the levelers but there may be other sensors involved (honestly not sure.)
However, wouldn't' that put you below level, a condition that's less than favorable?
What is your clearance between fifth and bedrail?
Have you also considered adding a different equalizer like the LCI Equaflex or similar? They all tend to provide some additional lift.
If you want to go 16" and don't have clearance, it's probably not too much to have the hangers cut off and a 2" square tube welded onto the frame and new hangers welded back on. That's how most of the new trailers are setup.
You may possibly be able to get 16" wheels/tires installed by using the equalizer above. Maybe have the outward hangers extended a bit? In either case, I'd have those hangers braced/boxed. A lot of folks have a piece of angle iron welded inside the hanger or have them partially boxed to reduce flex.
