I've done some searching and found plenty on airing down offroad, but want a little more input on what you guys choose to do on different surfaces.

do you guys tend to air down more in the soft stuff and less on small rocks or what?

On little jagged rocks like you find out in Arizona it seems that you expose your sidewall to the sharp stuff more with lower pressures.

What about snow? My snow driving is pretty limited and I now live in WA.

sand? and so on. . . all opinions welcome!

 

I like to air down for mud and rock but we don't have a lot of jagged rocks here. I wouldn't go very far below 20psi, rovers are heavy and you could pop a bead.

 

do you buy into those weight per tire airdown charts? they put my T/A KO 's at like 14psi . . . but they already get notably better surface area at 30 psi. i'm thinking 20 might be a good safe number. thanks nitetrain.

 

ko's have pretty stiff sidewalls, I never understood why people who love skinny tires for mud would airdown on mud. They are contradicting themselfs. Airing down is good on rocks because the tire can wrap around the obsticle.

 

I never air down and have only gotten stuck once and that was climbing a really really steep sand hill and I ran both diffs onto a log buried in the sand.
I'm talking sugar sand deep enough to bury the rims.

 

I do 25 psi on hard surfaces with rocks. Mud I would not air down, no sense in that. You can air down on sand, it increases the tire surface area in contact with the sand.

 

echomike, I've never seen a airdown chart I just know you can't go much below 20psi with a 5K lbs. vehicle running average MT tires. I've ran 11psi in Jeeps but they weigh a lot less than our rovers.

bundu, you're in florida you don't have mud just sand If you don't air down in red Georgia clay you'll be getting out to air down in the mud while you're stuck lol