I gennerally like 3psi front and 2psi in back. If I still can't make it up a steep dune I go to 2psi front and 1.25 psi rear. Believe it or not the truck floats about 4 times better at the lower psi but you start breaking inner beads on sidehills and you lose steering precision especially when on off cambers--the truck will be slow to respond and crab walk like crazy--this makes the inner bead come off even more so.
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