You mention some good points on a aggressive AT tire on a trailer.
I see many folks in the toy hauler forums use a more aggressive tires such as the AT (all terrain) or some rough AS for going out in the boonies .
I've found drawbacks to a aggressive AT tire with the larger blocks and larger voids is tread squirm on a trailer. The trailer feels like it doesn't want to track the truck and can lead to sway issues with any trailer type. Some of the ATs with the smaller blocks and voids are better but can still exhibit some tread squirm which may go away after the tire has worn down 25 percent or so.
I ran a set of used BFG MT (mud terrains) off of one of my other trucks on a GN flatdeck trailer. Sliding the tires on wet pavement at max load or empty and the trailer would not track the truck with severe sway issues I got them off the trailer before I made another run.
Whats important for a tire on a trailer is at least one solid rib all around the tire. More is better for straight tracking.
