Air bags are much tougher than you think. I put 450,000 miles on a big truck in 3 years, many times grossing out pretty close to 80,000 lbs. This was on a complete air ride suspension, and never had any problems with the air bags. I don't think your going to put that kind of miles, or punishment, on your Jeep. They have been tested for years, and have done very well. Worst case scenario, you get a bag that ruptures, no big deal, you replace it.