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Old 09-05-2013, 11:27 AM   #1
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Front end alignment issues. Need some help.

I've recently installed a 4" suspension lift with adjustable upper and lower control arms and I'm having some issues getting the front end lined out. It keeps wanting to pull to the right. I've made adjustments and had it in the shop twice for a front end alignment. It's close but still pulls. Here's a pic of the print out. I'm trying to figure out what I need to adjust and which way to correct the pulling. Thanks for any help you guys can give.


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Old 09-05-2013, 12:37 PM   #2
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Nice to see someone else is having this issue. I have a 3 inch Teraflex lift with a JKS adjustable track bar. I have had my Jeep aligned three times. The shop swears the Jeep is square and thinks the pull is a tire issue....I wish I could cure the issue....I'll be watching this thread closely.

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Old 09-05-2013, 07:35 PM   #3
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Your tires look like Toyo MT'S. If what you have is a drift rather than a pull it is possibly the tires. Mine did this when I installed them. I don't know if it stopped or I just got used to it. Google Toyo MT Pull and you can find lots of info.
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Old 09-05-2013, 08:29 PM   #4
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Yup...toyo mt, expensive, look great, balance really nice, and drift all over the road.
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Old 09-06-2013, 02:02 PM   #5
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Originally Posted by jrussblues View Post
Yup...toyo mt, expensive, look great, balance really nice, and drift all over the road.
X3

Alignment looks perfect
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Old 09-06-2013, 02:28 PM   #6
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Aside from the possible drifting tire issue, your thrust alignment (if I am reading it correctly, been a long time since I did alignments) is what is making it feel like it is "pulling" to the right.

Again, if I am reading it correctly, what is actually happening is the the rear lower control arms are not the same length. The driver side is a bit longer than the passenger side making it try to steer your Jeep to the right, by pushing the rear of the Jeep to the left.

How to fix it? Well, pick a location on your frame (make sure you can duplicate on the other side, so maybe the edge of the trans crossmember) and measure to the axle side joint on your rear LCA. Measure the other side and decide if you need to lengthen the passenger side or shorten the driver side. You may not be able to tell a difference in wheel well position, so just pick one. Understand that it doesn't take much to throw off your thrust angle.

I agree with KJeeper, though. The front end looks fine.
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Old 09-06-2013, 02:44 PM   #7
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Originally Posted by Gracey143 View Post
Nice to see someone else is having this issue. I have a 3 inch Teraflex lift with a JKS adjustable track bar. I have had my Jeep aligned three times. The shop swears the Jeep is square and thinks the pull is a tire issue....I wish I could cure the issue....I'll be watching this thread closely.
No, not nice
Sorry to hear you're having the same issues. It's annoying as all get out!
I love the ways the toyo's ride. I think i'll swap tires around and maybe let some air out of the driver front. I might actually pull the front driver side of the axle back a little too. Try to compensate a little for the right side pull.
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Old 09-06-2013, 02:54 PM   #8
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Aside from the possible drifting tire issue, your thrust alignment (if I am reading it correctly, been a long time since I did alignments) is what is making it feel like it is "pulling" to the right.

Again, if I am reading it correctly, what is actually happening is the the rear lower control arms are not the same length. The driver side is a bit longer than the passenger side making it try to steer your Jeep to the right, by pushing the rear of the Jeep to the left.

How to fix it? Well, pick a location on your frame (make sure you can duplicate on the other side, so maybe the edge of the trans crossmember) and measure to the axle side joint on your rear LCA. Measure the other side and decide if you need to lengthen the passenger side or shorten the driver side. You may not be able to tell a difference in wheel well position, so just pick one. Understand that it doesn't take much to throw off your thrust angle.

I agree with KJeeper, though. The front end looks fine.
The first time I took it in for the alignment after the lift, the trust angle was way worse. I installed an adjustable track bar and spent a week doing fine tuning on the control arms. The numbers on the printout got a lot better but still pulls. Right now the axles are pretty darn close to perfect parallel with each other. I'm thinking of pushing the driver side rear wheel slightly forward and pulling the driver side front back a little. See if I can compensate for the pull. With all the adjustable components underneath the rig now, I can make small adjustments for days! I just have to find the right combination.
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Old 09-06-2013, 03:19 PM   #9
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You can set a little more cross caster into the front axle. The jeep will naturally want to follow the crown which is to the right. Some manufactures iirc have you set caster .5 or so more to the passenger side to counteract this. Try shortening the front right upper a little or lengthening right lower if you have only lowers.

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