I follow death wobble threads and when they get to the point that there is no obvious solution, I like to suggest that the wheels of your Jeep may be mounted off-center. Also, if the wheels have been off-center for 10,000 miles or so, now the tires may be out of round. This issue shows up on Jeeps that have aftermarket wheels where the center hole of the wheel is bigger than the guiding edge of the hub (hub centric vs lug centric). Lug centric wheels will center if you use this procedure to mount them on your jeep.
https://wranglertjforum.com/threads/hub-centric-wheel-questions.26958/
Here is the procedure:
Here is how you should mount your
aftermarket rims, after a rotation, new rims or tires, or a good old cleaning
1. Jack car up and secure it with a jack stand (Safety First
)
2. Loosen all lug nuts and either put on rim, rotate or whatever the hell you need to do.
3. Thread on all the lug nuts, but DO NOT tighten to where you can not move them.
4. Rotate the tire/rim until one of the 5 lugs is at the 12 o clock position.
5. Tighten lug nut with thumb and forefinger to the point that you can not do it anymore.
6. Rotate the tire clockwise, skipping one lug nut.
7. After skipping the one nut, put the 3rd nut in the 12 o clock position. Tighten this one the same as Step 5
8. Skip one more nut, and repeat Step 5. This last nut will be right next to the first one.
9. Let the truck down to where the tires barely touch the ground. Use a wrench and tighten all bolts with about 25% of your strength. Just enough to grab.
10. I then let the truck down all the way and torqued the bolts to 90.
11. Repeat all steps above for the rest of the truck and throw a couple of beers in there