Originally Posted by ColoradoRooster
last night I went to get my tires rebalanced and rotated by a different shop and they told me the balance on the wheels was fine. After I drove away I noticed the shake was stronger when making a left hand turn rater than the right as it was before. I took it back in one more time to let them know about it and they checked the tire pressure one more time. I had one tire at 38psi while the others were at 35psi (a slight difference but a difference) they let some air out and now it seems to be better. still a slight shake at lower speeds but I think its just due to the more aggressive tires.
One tire 3psi higher than the rest isn't gonna cause a vibration.
All Terrains don't cause vibrations.
If one(or more) of your tires are out of round or balance, sure, that will cause a vibration.
Have you checked to make sure none of your tires are out of round?
Did any of them take an excessive amount of wheel weights to balance out?
I have the same lift as the OP(I forgot if that's you or someone else), and when it was aligned I was told that it actually aligned better than it came from the factory.
Zone does a really good job of keeping the geometry in check.
Who installed the lift?
If you paid someone to do it, a trip back to them to have them recheck your suspension and steering components to make sure there's no binding would be wise.
If you installed it, then you should re-check everything...on a lift.
I would pay attention to the rotating shafts. It's obviously entirely possible that parts/brackets weren't seated properly when installed/tightened, causing mis-alignment and/or bad angles
One last thing, if you feel the vibration(more) through your ass, then you need to check the REAR driveshaft angle.
FabTech(for example) HD lifts used to be notorious for their rear blocks creating bad d-shaft angles