The ORO Air Rock system is great for where I live and wheel. We have a lot of sidehill trails here in the PNW and being able to lean to the uphill side makes them seem not as bad. I have a bad leg so being able to lower the Jeep for getting into and out of it really helps.
When I first installed it I did so because I like the novelty of it. The ride is a lot smoother than coils which is really nice when going up some of the forest service roads to trail heads. Being able to adjust your height is great when going over obstacles. My only real complaint is that the front end can get a little light when trying to climb steep hills.
Some of that I think is the suspension I currently have on my TJ and then also is the shocks that are on it.
The only other issue is that you can damage them if you haven't checked for clearance of all your parts....
So far I have cut two air bags.
Glad I could help some. I think a 13.5 wide tire looks just fine on a 8" rim.