OK...buckle up...here we go.

I have had a pull to the passenger side of the Jeep for sometime. Don't know which if any mod or trail may caused it. I have adjustable upper & lower control arms front & rear. I have measured the length of each arm and have found the length to be no more than 1/16 to 1/8 of an inch difference between the corresponding arms. So for example, the front uppers are about the same length and the front lowers are about the same length.

When I measure caster, using the method shown in the tech write ups on the forum, I come up with about a 1.5 degree difference between the driver and passenger side, with the passenger side's caster being greater than the drivers side. I am adjusting... hopefully correctly...both measured caster angles for ground angles at both wheels. I have even flip flopped the position of the tires so each could be measured at the other spot on the ground.

The axle tubes are sleeved and the C's are gusseted. While I never checked the tubes or C's for bends prior to the sleeves/gussets, I gotta believe that neither the sleeves nor gussets would have fit if the axle or C's were bent prior to install...no?

Also upper ball joints were replaced by dealer about two months ago, when I had 35's. Now the Jeep rolls on 37's. Also a recent alignment showed the Jeep's rear axle thrust angle,was within spec.


My questions are...wait for it...

1) Assuming the differences in control arm length are negligible and given the info above, what scenario would exist that would cause the respective casters, driver and passenger, to be that different?

2) Why is my Jeep pulling to the passenger side?

 

I wish i could help you man my jeeps pulled slightly to the passenger side ever since i can remember and i have all stock control arms and i have had a few alignments done due to lift modifications, but im used to it now, hopefully someone can help you out.

 

1. i'm glad to hear someone else uses this saying!!!

2. i'm in the same boat u are, i have everthing set up PERFECTLY! finaly got rid of my death wobble, but the F@#$ing thing is still pulling driver side. i finaly gave up my battle, i'm taking it to a alignment shop to makesure everything matches up.

curious to see what you get as a remedy here

 

Check the tire pressure in the Bat Mobile, or have Alfred do it!

 

I battled the same for awhile after lift install...measured and adjusted, measured and adjusted, used factory recommended settings for Tera lower arms...went back to putting them equal lengths, nothing I've done has taken that slight pull to the right out.... I find I gotta steer against the crown in the road to keep straight...I just chalked it up to a Jeep thing

 

Thanks, I wonder if the gas tank sitting on the passenger side has anything to do with it?

My Jeep is a recovering death wobbler... Too much toe in, I guess. A recent alignments did not shed much light on subject. One suggestion, be sure to ask alignment shop how recently they calibrated their machine. I took mine to 2 different shops within 2 days and got wildly different toe specs.



Ya, already had Alfred check pressures. Plus I had the geezah rotate the 37's after he took caster angles.

 

Ya, everyday it's lookin' more like I'm gonna have to jump on the ..."it's a Jeep thing" bandwagon...Cheers!

 

I had this problem, then I realized the problem. The roads I drive on all drain to the outside of the road, so all I was feeling was it trying to go downhill. lol, I felt like an idiot after I realized this.

 

First, your caster is not the source of your pull. Caster always pulls to the side with the less amount, not the greater. So, with all else being equal (obviously it's not), you should be pulling to the driver side. The first thing I recommend is cross the two front tires left to right. Don't think about it, just do it. This will eliminate a radial tire pull if you have one. They are more common than you might think. It will do one of three things. EIther it will stop pulling, pull to the left, or continue to pull to the right. If it pulls right still, you know it's not the tires. If it starts to pull left, you know the tire now on the left has a radial pull. If it stops pulling, you know you had a tire with a radial pull, that had more rolling resistance turning one way than the other. It's always best to eliminate the tires as a suspect first, since it's very easy to do. Cross the tires and post your results.

 

I've read quite a few people say they have the passenger side pull after a lift. Well, my jeep is completely stock and I have a slight pull to the passenger side too. Although it is very slight. I have noticed that it almost goes away when there is not much of a slope. So maybe it is just amplified with a lift?