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Old 10-23-2018, 10:58 AM
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JK alignment wobble?

2013 Jeep Wrangler Rubicon Unlimited, 70K miles. I currently have stock Rubicon Rims (17x7.5), with 255/80 Cooper's on there. Stock sized tires have been on it for about 68K miles of it's life. Completely stock suspension. Previous owner put 1.5" spacers on the Jeep- unsure of brand.

Last week I noticed a little vibration/shimmy in the steering when turning at low speeds. I can only really feel it between 5-20mph, and only when turning (not when braking). It's not major, but it is there and wasn't before. My initial thought was I thew a weight or had tire out of balance. Just got them rotated & balanced, it made no difference.

Should and alignment be the next step? Or should I be checking the tie rods, ball joints, and track bar? I don't really know what to check on all that stuff, honestly.

I wonder if the spacers might have anything to do with it. I am going to get some new rims so that I can ditch the spacers yet still have the tires be flush with fenders. My question is- should I go ahead and have the steering components checked first? Or should I do wheels first (and see if the spacers were causing the issue), then alignment/steering if I still have a vibration?

What say you? Thanks in advance for the advice.

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Old 10-23-2018, 11:02 AM
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By the way- the vibration/wobble is not related to hitting anything. It happens only at low speed, when turning. I can't feel it when driving straight. But when turning corners at slow speeds, I can feel a vibration in the wheel. It is consistent.

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Old 10-23-2018, 01:32 PM   #3
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Are your tires cupped? You tend to feel that at lower speeds when turning, or at least I do.

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Old 10-23-2018, 01:45 PM   #4
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Based on the 68,000 miles I would be looking at new tires....
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Old 10-23-2018, 04:18 PM
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Tires are less than 1 year old. I just had them rotated & balanced, because I thought a tire out of balance was it. It made no difference. Guy at Discount Tire said there was some ever-so-slight cupping on the front- thats why he thought alignment may be the issue.

I'll check the tie rods & ball joints and see if those are worn.
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Old 10-23-2018, 04:48 PM   #6
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In my experience, even a little cupping is noticeable at low speed while turning. My bet is it's your tires. You might get lucky and as they wear, they'll even out, or you could play with air pressure.

How often do you rotate the tires?

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Old 10-23-2018, 06:19 PM   #7
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Any noise to go with that? I had that sort of feeling at low speed, roundabouts mostly, when my front axle uni joints had died. When they were pulled out, the roller bearings in them were mostly brown powder & chunks...


Easy test; jack up a wheel, (removal is optional), put your hand around the uni joint & move the wheel/hub a little back & forth. If you feel any movement between the yokes at all, then the uni is cactus. Replace them asap.
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Old 10-23-2018, 08:40 PM   #8
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I had this same issue everytime my Ram 3500 chewed through a set of front u-joints.
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Old 10-24-2018, 12:11 AM   #9
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I found the pic! Here is what fell out...


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Old 10-24-2018, 11:29 AM
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Quote:
Originally Posted by Prages View Post
In my experience, even a little cupping is noticeable at low speed while turning. My bet is it's your tires. You might get lucky and as they wear, they'll even out, or you could play with air pressure.

How often do you rotate the tires?

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As I said, tires are less than a year old and I had just them rotated. As soon as I noticed the issue, that is what I did a rotation and balance. It did alleviate the vibration at all. But the tech discovered the ever-so-slight cupping, which I believe is the result of the issue, not the cause.

I discovered a tiny bit of play in the drag link end, driver's side that connects to the pitman arm. There was also some grease or something on the pitman arm above the joint. The tie rod ends and the other side fo the drag link all seemed to still be firm & in order. I have ordered a new end for the drag link- we will see if that fixes things.
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Old 10-24-2018, 11:30 AM
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Quote:
Originally Posted by Prages View Post
In my experience, even a little cupping is noticeable at low speed while turning. My bet is it's your tires. You might get lucky and as they wear, they'll even out, or you could play with air pressure.

How often do you rotate the tires?

Sent from my SM-G960U1 using Tapatalk
As I said, tires are less than a year old and I had just them rotated. As soon as I noticed the issue, that is what I did a rotation and balance. It did not alleviate the vibration at all. But the tech discovered the ever-so-slight cupping, which I believe is the result of the issue, not the cause.

I discovered a tiny bit of play in the drag link end, driver's side that connects to the pitman arm. There was also some grease or something on the pitman arm above the joint. The tie rod ends and the other side fo the drag link all seemed to still be firm & in order. I have ordered a new end for the drag link- we will see if that fixes things.
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Old 10-24-2018, 10:53 PM   #12
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So, the Coopers are new, or about 2000 miles? What Coopers? If ST MAXX those have large lugs on the shoulders and may be the cause of the vibration when turning. If the steering wheel pulses or moves slightly left and right as your turning then check the u joints.

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