I will post another plus for airing down that hasn't been discussed yet and provide a real word example... Yesterday my co-worker needed the work truck so I took the 4runner out on inspections. I had to do a couple checks of ag land use and then there were these 5 grain bins that had been destroyed I had to go verify. I was told access wasn't possible unless I went about 40 miles out of my way and came in through a few other ranches. I was pretty close the way the crow flies so I though I would at least check it out, maybe hike if I had to.
It was all nice road until it climbed up the gumbo bluffs, where about a quarter mile of road had just schluffed off into the abyss. It appeared safe, but it was all soft and full of cracks. I knew it would be easy with the 4runner but I didn't have the option of tearing it up, so I went ahead and aired down to about 10 psi.
I barely left any tracks at all, much less tore anything up.
Funny thing is it rained that evening so there will be no trace, and the land owner will probably think I went there in a helicopter
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When you air down you are treading lightly, with less wheel spin and less impact on the terrain.Now I understand this may not apply to rocks were you can't dig holes by spinning anyway, but I felt it was important to bring up. It is a verifiable fact that a low pressure tire will do less damage than a street pressure tire.
