I haven't been able to get an answer for this, so I'll ask again. My JK has had a drift to the right since it was new, After a 3" lift and 34" MTRs on 4 1/2" BS wheels it's closer to a pull. I've tried pushing the lower right forward up to 3/8" with no results. The castor stays the same on both sides because it's a solid axle. The only way to move the right side forward is to purchase a set of upper adjustable arms and then lengthen both the right upper and lower arms. Will this eliminate the pull to the right? It seems that it would, but I don't want to spend $300 for uppers if it doesn't work. Two alignment shops couldn't cure the problem and I don't want "live with it" as the last shop said.

Thanks for an experienced response.

 

Look at your camber, it may be out of spec. Does it pull to the right on flat non crowned road?

 

If it has a slight pull, or drift, to the right on a crowned road (most roads), its normal.

Flash

 

WOW!!! Funny you ask. I'm heading to the dealer tomorrow morning to deal with mine. I have the same pull to the right, and my JK Unlimited is 4 weeks old. Did you not have success at the dealer. My initial thought is that they better correct this.

 

Could also be the toe, which you can easily check yourself. I had to adjust mine because even though overall toe was ok, both tires were pointing slightly to the right from ideal.

 

The cambor is in specs and the toe-in is 1/8" in. The dealer said everything was fine after they adjusted the tracking bars, but the pull is still there. The second alignment shop confirmed that everything is where it should be with a 3" lift. He acknowledged the pull to the right and said I was going to have to live with it. He suggested ovaling out the hole in the upper right control arm to let the axle move forward when the lower was lengthened. I wasn't sure I want an oval hole in my control arm, hense the adjustable uppers thought in my post.

Edit: If both wheels were pointing slightly to the right when the steering wheel was straight, that would mean a drag link adjustment, not a toe adjustment.

 

True, if it was the same amount, but I adjusted the tie rod unevenly to get what I wanted.

Anyway, good luck.

Also carefully inspect your trackbar mount and make sure it's not cracking. I thought I was having alignment issues and mine ended up shearing a few days later. I had an intermittent drift/pull and it was the lower mount shifting under load.

 

Here is my take on it. Are you sure it's a pull to the right? Do you have any roads that crown to the left?

On standard 2 lane roads, my jeep pulled to the right pretty hard after I lifted it. But we have a lot of divided roads here where the left lane crowns to the left. When in the left lane it would pull to the left. Also I would notice when a big truck pulled along side of me on the freeway the jeep wanted to pull to the opposite direction pretty hard.

Basically because my steering geometry was off, what I was experiencing was suspension movement causing steering inputs I believe. Thats why a road that crowned right causes a right pull and a road that crowned left caused a left pull. The reason why large vehicles next to me caused a problem is, I believe, the air comming of that vehicle would slightly lift the suspension on that side causing the jeep to steer slightly to the opposite side. Cross winds would also blow me all over the road at highway speeds. Again I think the wind was lifting the suspension slightly on one side causing the steering input. In general over bumps or at highway speeds my jeep seemed pretty flightly.

I just recently put on an AEV high steer kit (with shock relocation brackets). It made a world of difference. The jeep doesn't pull anymore. Cross winds and large vehicles driving next to me on the highway don't cause me to have to steer in the opposite direction to maintain my lane.

Now the jeep feels planted and solid. It was well worth the money.

 

I've confirmed that it is a pull to the right. On the interstate, it pulls to the right in the right lane. When I go into the left lane, I can let go of the wheel and it will run straight down the left lane. When I take our van or the Avalanche on the same interstate, they run straight in the right lane and when in the left lane, they both drift to the left. This JK has 3800 miles on it and has done it since new with stock suspension and tires. The pull is just a little more with these tires and lift.

 

Mine does the same , just ever so slightly... do you have any abnormal tread wear?? On my front pass tire there is just a little feathering( not enough to see)