I have gotten into some pretty deep sugar sand here in Florida in Ocala National Forest and other areas and have gotten through it without airing down (37psi) on 295/70/18 RT Trails with no problems at all. The worst it got was feeling it slow down and dig just a little for a couple seconds and then it got back on top and carried on like nothing. Granted, this is very little elevation change. Momentum is the most important thing and not even that fast either, just a steady pace. I do lock the center diff if I know there is deep stuff coming.
In trail rides I see the guy in front of me (mostly Jeeps cuz they are the most popular) start to sink all the time in the really soft stuff and they end up gunning it and spinning all 4 to keep from sinking shooting sand everywhere while I am behind them just cruising along.
In trail rides I see the guy in front of me (mostly Jeeps cuz they are the most popular) start to sink all the time in the really soft stuff and they end up gunning it and spinning all 4 to keep from sinking shooting sand everywhere while I am behind them just cruising along.