I have a 2013 with 6k miles I bought new and installed a BDS 4.5 lift with adjustable upper and lower CA's, the standard BDS shocks, and one steering stabilizer. Rubber bushings. 20" fuel wheels and 35" MT tires. Lift was installed at a BDS authorized dealer.

I get dwobble frequently unfortunately, even over manhole Covers. I've had the alignment checked by two different 4x4 specialty shops and even verified its acceptable with BDS at the alignment shop. Ball joints, tie rods good. Tire/wheel balance good. All steering components tight verified by two diff shops and also dealer.

Does an alignment spec need to be more aggressive? Are the standard BDS shocks crappy enough to do this? Any suggestions would be helpful. Out if things to try that I know of. Thank you in advance -

Aaron

 

Might try skewing the alignment numbers a little. By that I mean to have a little toe out. Most set toe in a tiny bit or dead straight (0 toe) sometimes a little toe out helps calm things down. Also, you might try about 24-26psi. I bet with 20's a tire shop probably has WAY TOO MUCH pressure in the tires. It sounds like caster should be ok. So only thing left is calming down those heavy wheels and tires by adding a little "scrub" to the mix. It will do wonders to help dampen wiggles and wobbles.

 

I suggest you read this thread Diagnosing Death Wobble and Fixing Non-DW Shimmies and Wobbles - JKowners.com : Jeep Wrangler JK Forum
And have your 4x4 shop read it also.

 

Thx for the reply. Will have to try the toe adjustments. My psi is 27/28.

Yah I did read that a few months ago and again recently. Tried most everything in there but still got the problem. I haven't had the shop read it though.

 

What would you guys say if I put the stock wheels and tires back on and the issue went away?

 

If you have the alignment printouts handy, post the numbers. Someone here may have a different opinion than your shops.

Which of Planmans steps did you not try?

 

I would say it has to do with the "scrub radius" not being optimum due to huge tires and probably not the optimum back spacing to keep the wheel/tire combo centered on the line imaginary line that passes through the ceters of the ball joints down to the center of the contact patch.

It could also be a slightly out of round( not to be confused with out of balance) wheel or tire. But, honestly, if it happens with the 35's, it will like happen with the OEM size. Maybe just not as excitable as the bigger tires and their weight.

 

Is it death wobble or a shimmy?

Death Wobble is when the Jeep is shaking very violently and feels as if it wants to kill you. The only way to stop Death Wobble once it starts is to come to nearly a complete stop.

A shimmy shows that something is steering is starting to wear.

 

death wobble for sure. There is this place in the road near me where there are three man holes in a row within 12" from each other and they are probably sunk in 2 or 3" and if I hit that it will set it off every time. (I avoid it now)

 

Did you put the stock wheels and tires on? Did that correct the problem?