Vibration After lift @ 60 mph
Thread Starter
JK Newbie
Joined: Dec 2011
Posts: 86
Likes: 0
From: Pittsburgh, Pa
Vibration After lift @ 60 mph
I have a 2012 Unlimited. I had been running 33" tires on a Teraflex leveling kit and all was fine. I upgraded to 315/70 Falken Wildpeak AT's and Teraflex 2.5" lift with the new springs. I ran the tires prior to putting the lift on and all seemed fine again. Once the lift was on I now get a vibration at 60-68 MPH. It doesn't seem to come from the steering wheel it just feels like a vibration resonating through the whole vehicle. Its not severe or affect steering or drivability. It is however, annoying as hell. I have retorqued every bolt several times. The only "mod" with the kit is the drop bracket for the rear tracbar and it doesn't seem as if it can be done wrong. I'm lost on what to do to fix this. If anyone has an Idea please let me know. I have a trip planned at the end of August and I'd like to remedy by then.
Thanks
Jon
Thanks
Jon
Thread Starter
JK Newbie
Joined: Dec 2011
Posts: 86
Likes: 0
From: Pittsburgh, Pa
I have the stock drive shafts front and rear. Pinion angles are ok I believe. I will get a couple pics after work today and upload for thoughts. I did notice that is does increase the vibration more if I'm slowing from say 70 to 60 mph as opposed to accelerating from 60 to 70 mph. The rpm range (stock motor and gearing of 3.73) puts me just at the top of the green bar on my tach (cant remember the actual number off hand) and at that rpm at other speeds I have no vibration.
JK Junkie
Joined: Nov 2011
Posts: 2,199
Likes: 218
From: Over the hill
Perhaps jack each wheel up and spin them by hand, and look for excessive runout on the side of the tire. Had a similar vibe on a PU, found a slightly bent axle flange this way. Crud between the wheel and hub might keep the wheel from mounting flat and true on the hub.
