77 4x4 wrote:
6 psi

? thats kinda low or does it help for crawling?
ya, it really helps with crawling/mud/rocks/SNOW/and traction in general, if you want, air yours down to 15psi sometime (after trying some obstacles with your normal psi) then go back through it at a lower psi, you will never look at your tires the same....ever....

What it does is increase your tire footprint and allows the tires to fold/wrap around objects easier. your tires should be wrapping really well at 15psi, i would start at 20psi and go down to what you feel comfortable at. I started at 20psi and even from 30-35psi(what i ran normally) it made a difference, then i went to 15psi, then one day someone egged me on to try 10psi, and oh man! i was never the same again! Tires react different too, The reason i can air mine down so far is because of the style of tire, yours are a radial so they will start producing a bulge sooner than my tires would.