Weird, I'm not getting notifications of replies.

We were running about 26psi. Any higher and the side lugs wouldn't have even been touching.
It wasn't a psi issue, it was a crappy quality control issue. Then it became a customer service issue...never again.
Check eBay, I got a set of 225/75R16 Kumho muds for the wife's XL7 for $350 delivered to my door.
Oh yeah, I highly recommend siping the tires. Either pay to have a tire place do it or buy a knife and do it yourself (what I did). Makes a world of difference. All I own are MT's now.