After my 2" RUSTYS lift in my 99XJ I cured my low speed drive line vibrations w/ T-CASE DROP.I am still getting a shimmy @ 55- 70 mph that feels like unbalanced tires. Tried two sets of balanced tires ,not problem. Took out front drive shaft, still got shimmy.I went to FIRESTONE to review alingment paperwork and the CASTER was set at 5.3* . RUSTYS and others reccomend 7* CASTER.Could this be my problem? Do i need an adjustable track bar w/ a 2" lift? I didnt take off the axle bolt on the track bar when i installed lift .

 

ALIGNMENT

 

Hope you got the lifetime alignment at Firestone.

I had the exact same shimmy after installing my 2 in. spacer up front, alignment cured about 80% of it, now I barely feel it.

 

I just checked my paperwork from my last alignment, (From Firestone). The tech made a note that my Caster adjustment was maxed out, (6.0), and vehicle will continue to drift.

Shimmy is mostly gone, tires aren't wearing abnormally but there's a slight drift to the right I wish could be fixed.

Is there anything we can add to our Jeeps so the alignment can be set to specs again? I have 2wd.