[CRIK]

Nashville has the worst roads at times. I purchased this back in August and it has approximately 4.5-5.5 inch lift on it with 35" inch tires.

It was completely fine; however, about a month ago I need a dip in the road (not too deep just jarring enough) and from time to time I am getting bump steer. I have checked everything and nothing looks cracked or bent. It doesn't happen every time I drive it so it has been hard to pinpoint it. I was going to take it in but I am trying to decide if I should start replacing parts since I don't know how old they are. What is the first thing I should start with: Trackbar, ball joints, tie rod, drag link, etc? Also, if there is anything you might suggest I look at before replacing parts, let me know. I need to get the 70k service done in the next month so I may have it looked at then.

I have plenty of other "Jeep-to-do's" for both of our Jeeps so I would prefer to not put this in the front of everything else unless I have to. Thanks for your help!

 

[CRIK]

Just to add something that I did not see here. The wheel offset will add to bump steer. The geater the offset the geater the bump steer.
I personally like to stick with factory offset if I can.
my 09 rubicon has OEM ball joints, JKS track bar front/rear, JKS sector shaft reinforcement system, steer smarts drag link and tie rod, fox 2.0 stabilizer and 2.0 shocks. I run OEM wheels and BFG mud tires 32”. I personally do not like a lot of lift for the wheeling I do. Side hills. OEM control arms (for now), 2” lift.
just to comment on the stabilizer comment. I have my front end like perfect for me my JK. Alignment 4-5 castor. I had a stabilizer bolt fall off, not sure why. I could not really tell it was not even hooked up, handled just fine, no death wobble or bump steer. I did notice it was a little bit tighter with stabilizer back on. So ya, a good front end makes a big difference.

 

[GP NOIR]

Nashville has the worst roads at times. I purchased this back in August and it has approximately 4.5-5.5 inch lift on it with 35" inch tires.

It was completely fine; however, about a month ago I need a dip in the road (not too deep just jarring enough) and from time to time I am getting bump steer. I have checked everything and nothing looks cracked or bent. It doesn't happen every time I drive it so it has been hard to pinpoint it. I was going to take it in but I am trying to decide if I should start replacing parts since I don't know how old they are. What is the first thing I should start with: Trackbar, ball joints, tie rod, drag link, etc? Also, if there is anything you might suggest I look at before replacing parts, let me know. I need to get the 70k service done in the next month so I may have it looked at then.

I have plenty of other "Jeep-to-do's" for both of our Jeeps so I would prefer to not put this in the front of everything else unless I have to. Thanks for your help!

Because the problem came up suddenly, the first thing I’d check is the fit of the pitman arm to the steering box sector shaft. If there’s the tiniest bit of play, especially if using a drop pitman arm, it will multiply the effect through the steering.

You can try tightening the nut, but chances are the pitman arm is worn and needs to be replaced.