Here's what I have found: In most circumstances, traction is improved by softer tires. It helps spread the footprint of the tire out. The only real problem is when you can tear a tire, like on jagged rocks [which you can also do with highly inflated tires too -you gotta be careful either way.] Go especially slow and easy when you get anywhere you could pinch a sidewall. I've used 14 to 18 PSI on ATR's and MTR's -but not on rock. I'd have to ask somebody else for that.
Anybody else?
-Jack
Yellow H2 adv. on order
"I think I can make it. D'OH!"
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