I personally air down to 10 or less and usually 8 or 7 I use this for all conditions, (sand, snow, rocks and mud). I believe that air pressure is your enemy. The lower the better. it also depends on the tires you run. If you run stock tires, airing down will most likely do more damage than good. I run 35's and have for that last 6 years. I have a samurai with 31's that i run about 5, although I only run 15 on the street with it.
Last edited by igofshn; 02-22-2008 at 11:43 AM.