Is that on a 22? You can air down, but it's not going to do as much. See if you can find some 18" rims
I've done OK with my Jeep Grand Cherokee's 265/50R20's in the sand, but 265/60R18 does better.
Yeah, the dealer "upgraded" the rims before I bought the truck to 22's. They come standard with 20's. I totally didn't even look at the sidewalls before I drove it off the lot. I wasn't thinking. I should have said something the next week but I figured it was too late. Someone also told me I should be ok but after doing a lot of reading today I found out I wasn't ok.
So, yeah, this evening I've been looking at Craigslist and have found some 265/65/18's. Apparently dealers are taking these off of GM suv's and switching to something else. Now I've just got to sell my 22's.