I have been diagnosing an ongoing deathwobble problem from a while now and am at the end of my rope, so to speak.
Background:
37" BFG MT's
4 door with Rubi D44's front and rear (5:13 gears)
new 4.5" lift never even been off road yet
Jks front track bar with the Currie relocation bracket/ brace.

I have checked the obvious, Rotated tires, Balanced tires a few different times, Just installed a brand new Rancho steering stabilizer, Checked and re-checked that everything is tight regarding the suspension and trackbar

The fact that it seems to happen when you are braking is the odd part to me. I my experience, death wobble has usually been set off by an off camber bump or something like that. No bump necessary for me. Just brakes but not every time, so it has been extremely hard to isolate.
Any help would be appreciated.

 

Rotors seem fine to me. Nothing obvious.

 

I had DW that was induced by brakeing. Had dealer check everything. They finally turned the rotors and that fixed it.

 

I agree with goody u really should be looking at the brakes for something that happens when u brake. And your eye can't see runout.
How many miles u got on it??

 

X3 on goody's advice. Sounds like warped rotors to me.

 

Good advice. Thanks for the suggestions. Looks like I may have been overlooking my rotors. I figured that if I couldn't feel any warping through the pedal then it wasn't there. I'll get them checked and report back.

 

I agree with Planman, the most likely is probably wallowed out holes somewhere. Listen to planman, he knows what he is talking about. He helped me diagnose my DW a month ago and it has not reoccurred.

 

I have seen rotors with only .003 variance create noticeable vibration in the steering wheel of a passenger car. With your larger wheel and tires, you have much more rotating inertia than a small passenger car, therefore any runout in your rotors will maginfy the felt effect.

I would not reccomend turnnig your rotors in this application. Modern vehicles typically don't have very thick rotors to start with; they do this to help cut down weight and increase mileage. With your set-up I would go with factory replacements or after-market upgrades that can handle the additional heat created by braking the larger wheels and tires.

 

The trackbar is almost always the root cause of death wobble. If you have an aftermarket, check closely the connection points.

 

I have a stock suspension and am experiencing pulsation in the brake pedal and vibration in the steering wheel when braking at highway speeds. It started out as a slight pulsation but now it is getting worse. i think it is warped rotors.
i'm going to check the rotor runout in the morning.
Anyone have feedback on the Teraflex big brake kit?