I purchased a 2014 DJ SXT a few months ago and absolutely love it! It has so many options on it that each day I find something new on it that it can do, but at the same time, learning how it drives. It came with the 19" upgrade package and the max PSI on these Michelin's are 51 lbs......I put in 42.
What I have noticed is that when I go bumps, the back end bounces off to the side a wee bit. A mechanic had told me that the DJ's are known for some sort of back link/bushings (can't remember exactly) that wear out that possibly cam cause this, but he quickly checked it and said everything was solid.
If this is true, is there too much air in the tires to cause this?