I agree with Jeff's spacers. Put them on a month or 2 ago and I love it. I am also running 31's on my 4 door and they only rub a little on the fenders. The problem I am having is I am running stock rims and the tires are rubbing on the frame. I would like to keep the stock rim but don't think even with a spacer would help any, I think it would still rub so I might need to buy rims. Have anybody used 31's on stock rims and if so, what size spacer do you guys put (any pics)!