OK this is not my Jeep but a close friends.
We installed a 3 inch fabtech budget lift and put on new rims with 35s.
We were coming back from a road trip and he hit the brakes and the thing went into a death wobble then we continued on, then with out hitting the brakes it went into a death wobble again. So I noticed the trac bar bolt was loose so we tightend it up along with every other bolt just to make sure nothing else was loose. We continued on are way problem fix well we thought. 2 days have gone by and we were headed to the woods tonight hit the brakes and there was the death wobble all over again. All bolts are tight so now we are puzzled. The only thing we can come up with is after we installed the lift he went down and got an alignment with the factory rims and tires because the rims and tire were not in yet, so maybe that could be are problem any ideas?