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My Bronco has been having an issue, I have lifted it and put some bigger tires on it and it has a wobble. At first it started as a front end wobble side to side, I assumed it was alignment since it was also wearing my passenger side tire so I had an alignment done and that fixed it but then there was a new wobble. Its not as violent as a death wobble although it does seem to be started by a bump like death wobble. It feels more like the whole truck wobbles now than just the front end, I've tried everything to fix it. When I lifted the truck I replaced both the front and the rear axle, the TTB got all new bushings, bearings, and balljoints and the rear got new bearings. I have a 6" BDS kit with full springs in the rear, dual steering stabilizers up front, dual shocks on either side, the drop pitmant arm, and extended radius arms. It seems to be really noticable during acceleration mostly from 40-60 miles an hour (third gear) then will continue after 60 miles up to 80 miles an hour. I have no idea what it could be and if anyone has any ideas that would be great.
Didn't notice you say anything about Tire Balance have they been balanced? also a "Road Force Balance" can fix big tire issues sounds like your suspension build is stout otherwise. try some new track bar bushings
I would second the idea of starting with the tire balance. If it feels like it is coming from the front, try rotating the tires to the rear and see if the problem continues. Also you didn't mention if the BDS kit came with drop brackets for the ttb arms, I am guessing that it did. From what I understand anytime the ttb is lifted over more than a couple of inches, drop brackets or a cut and turn are needed to maintain proper geometry.
The tires are balanced using the beads on the inside of the tires, I may do a road force balance to see if it is the tires after I have looked through other options. The kit came with 6" drop brackets for the TTB so it could keep the original geometry. I suspected one of my tires was a problem so changed it out for a spare and the issue seems to have gotten better but is still there, I'm picking up a Go-pro tomorrow to mount below my truck to help see what is causing the issue.