My front brake rotors warped after 12,000 miles. Replaced by the dealer and was told that jeep has had problems with this in the past.
Now at 39,000 the rotors are bad again. Otherwise the car has been fine.
After speaking with many service and parts personnel, the solution was a "quality" set of after-market rotors and pads.
So far so good!!!
I have had the same experience with the rotors on a 2003 Jeep Grand Cherokee, turned at 19,574 miles, replaced at 27,907 miles. Now at 49,500 the rotors are already terribly warped again. It seems that the stock parts used by Jeep are not "quality".