what 's the correct air pressure when doing it on sand, on highway, and on offroad.?

[tower]

Originally Posted by Steve #1

18 PSI? That's total right? As in 4.5 psi per tire?

For most vehicles / tires, it's not worth getting out of the truck, much less having to air back up if you don't go down to at least 10 PSI.

To get a good ball park, park on pavement and measure from the ground to the bottom edge of the rim. Reducing this distance by 25% will give you the largest foot print you can get (unless you want to get technical and do a ton of measuring). It depends on the tire and weight of the vehicle, but in most cases your looking at about 5 PSI, but may be anywhere from 2 to 10 PSI.

Seriously, what planet are you wheeling on? I've aired down to 15-18 for rock and 12 for sand that was fine as talc (Oceano Dunes, CA). Where the hell have you wheeled with 2 PSI in your wheels? The article you site does not even mention pressures less than 7 PSI. And nowhere does it recommend that. I guess you could read articles and Web-Wheel with zero or even negative pressure in your tires. What exactly do you personally carry to re-attach your beads? Or do they just adhere from the negative pressure (vacuum)?