yep.. dont!
ok, from what ive read.. only read mind..
tyres sould be raod or AT, and the muds can just dig you in to holes, lower the presaure by at least half, so teh trye flattens out giveing more grip
i think i also read some where use 3wd high, not low.. as low you can get wheel spin, and again gid yourself in. if you can get some waffle boards. and a mate with a tow rope just in case, or a winch, even if its just a hand one.. better than nothng.