any problems with airing down going off road or crawling?
did you keep same ratio? how's the gas mileage?
I have 315/70/17 BFGs on stock rims, I air down to 18psi regularly to drive on the beach and it works really well. In fact, from what I have read online, the narrow rim is a poor mans bead lock in that it is less likely to lose the bead than a wider rim