There's an old saying to the effect that if you can't walk it, you can't drive it.. pretty well true for mud sand, creek crossings etc.
So, have you walked it to check it out. Rule 2. Poke a stick in to find the bottom. If it just sinks, forget it.
Rule 1 is do you need to go that way. Take Baz's chicken track if you can.
Set up recovery gear, Rule 3. Talk to your mates beforehand about how they're going to pull you out. There is more than one vehicle, isn't there.
I find the best technique is a lowish gear, high revs, but little throttle. Momentum will then get you a fair way without wheelspin. If it bogs you can then give it a bit. If the mud has a firm bottom underneath you should be ok.
You don't say whether it's a swamp you're trying to cross, or a track with wheel ruts. You'll probably fall into the ruts so you might as well start in them. If they're too deep, see Rules 1 & 2.
There was an earlier post about 15 psi. A lot of people do this. I don't anymore, had too many tyre problems where idiots have previuosly thrown rocks & logs in the ruts which you can't see. Ripped sidewalls, punctures, rolling beads off. My suggestion is stick to road pressures in mud.
Regards
Max P

