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  #25  
Old 06-27-2013, 09:39 PM
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Re: Tire vibration??

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Originally Posted by bigredcherokee View Post
Guys check your struts and the isolators. If one of the two are weak its going to cause your problems. I don't think it rims or tires.
Thanks I'll look into that. You are the first that has bought that up. At 11K worry about struts and isolators already?
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  #26  
Old 06-27-2013, 09:54 PM
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Re: Tire vibration??

Anything is possible. Isolators can be hard to diagnose. If you have a bad one it will radiate in the body somewhere and tire vibration etc.

Here are the part numbers the dealer replaced

68069661-AB absorber sus 170230
68029646-AE isolator spr 170230

Pulled from Oreilly Auto page.

A stretch of road that is perfectly smooth and free of bumps is practically unheard of, yet most of the time drivers and their passengers are completely unaware of just how bumpy the roads really can be. This is because of the car's suspension system, which uses struts and springs to provide a smooth, jostle-free ride. They allow the tires to roll over potholes and bumps without shaking up the passengers like a set of maracas on Cinco de Mayo.

The suspension absorbs the tire's movement on the road so it is not transferred to the passenger compartment of a vehicle, and it also maximizes friction to improve a vehicle's stability on the road, especially during acceleration, braking and cornering. When you take a turn, the suspension redistributes the car's weight so it does not roll over. A suspension system, which is part of a car's chassis, consists of shock absorbers, struts and springs, among other parts.

When the suspension system begins to wear out, it can not only begin to be less effective at providing a smooth ride, but also cause added wear and tear to tires and affect the steering stability. Other signs of failing suspension systems include bottoming out and excessive bouncing and back-and-forth motion. You may also notice that when you apply the brakes, your vehicle's front end will dip forward or drift if the suspension is not in top condition.

Driving the car while watching for these symptoms is the first step to determining whether the suspension is in need of repair. When you notice a problem, you should make a mental note, or have a passenger write down what happened and the type of surface on which you were driving. You should also keep track of the frequency of suspension issues.
When you get back from the diagnostic drive, there are a few other tests you can administer to the suspension system. First, you can manually check how well the front suspension is working by applying a bit of force to the bumper to make the car bounce up and down. While you are bouncing your vehicle, you should feel some resistance, and once you stop and step away from the car, it should come to rest after just one up-and-down motion. If it continues to bob for a while, and if you noticed that it did the same thing when you drove it over bumps during the test drive, you may need to replace the struts.

The next step in diagnosing the health of your vehicle's suspension is to pop the hood and inspect the area where the struts attach to the frame or fenderwall. The shock towers are mounted to the car with bolts and there should be a rubber piece between the bolt and the metal. Check this for cracks or tears. You should also repeat the manual bounce test, this time watching the towers to see if they are visibly loose when the car is moving up and down. If you notice that the towers are loose, the struts may not be the culprit. Instead, the strut cap, which is located at the top of the strut and houses the bearing, may need to be replaced. This problem is also often accompanied by a knocking, bumping noise when you drive over bumps
- See more at: http://www.oreillyauto.com/site/app/....40Dom81U.dpuf

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Old 07-02-2013, 08:38 PM
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Re: Tire vibration??

We have a 2014 GC Limited with 18" wheels. Today while driving my wife's Jeep I noticed that steering wheel shakes slightly at around 70-75 mph on the highway.

Has anyone else noticed any issues with 18" wheels? Btw, the tires are Michelin Latitude. Most of the posts I have seen are related to the 20" wheels.
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Old 07-06-2013, 02:30 PM
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Re: Tire vibration??

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Originally Posted by GCL2014 View Post
We have a 2014 GC Limited with 18" wheels. Today while driving my wife's Jeep I noticed that steering wheel shakes slightly at around 70-75 mph on the highway.

Has anyone else noticed any issues with 18" wheels? Btw, the tires are Michelin Latitude. Most of the posts I have seen are related to the 20" wheels.
I have the same Jeep and same issue. My steering wheel is also off center to the right. I have an appointment on the 13th to center the steering wheel and will bring this up as well. I'm noticing little annoying issues and I've only had the Jeep for one week.
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  #29  
Old 07-06-2013, 03:14 PM
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Re: Tire vibration??

I swapped out the Latitudes for LTX tires on my 18's and have no vibration whatsoever. Did this the day after delivery, and also had them balanced. Haven't gone over 80, and probably won't, so that's my experience.
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  #30  
Old 07-06-2013, 11:08 PM
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Re: Tire vibration??

Vnb, could you post the results of the dealer visit after your appointment? I plan to wait for first oil change to address a number of issues. Thanks
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Old 07-07-2013, 04:29 PM
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Re: Tire vibration??

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Originally Posted by GCL2014 View Post
Vnb, could you post the results of the dealer visit after your appointment? I plan to wait for first oil change to address a number of issues. Thanks
Will do.
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Old 07-15-2013, 04:47 PM
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So I just got my Jeep back. Road Force Balance was ok, all four tires within spec (RF=13, LF=6, RR=14, LR=10). They moved the LR tire to the RF so that the two lowest readings are in the front.

Here's a pic of my wheel alignment numbers\adjustment. Right front Caster and Toe-in was off, needed adjustment.

With the move of the Left Rear (LR) tire to the front and along with the Caster and Toe-in adjustment, this seemed to have diminished the steering wheel vibration at 65+mph.....with the very short amount of time I had on the highway driving home to test. I will road test it again tomorrow going to work.

They also realigned my sunroof...the seal is still not evenly flush with the roof line all around, but a bit better.

The steering wheel seems to now be on center.

Last but not least, they said that the liftgate handle trim not being flush was "found to be operating to specification". They looked at four other Limited's on the lot and said all are the same. Well I guess then all four also have this issue. At least I have record of it in case it becomes a water infiltration issue. Not too concerned.
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  #33  
Old 07-16-2013, 07:26 AM
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Anyone have any numbers I can compare mine to?
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  #34  
Old 07-18-2013, 11:54 AM
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Re: Tire vibration??

Well, it's now day four 4 that Jeep Chrysler of White Plains, NY has held on to my 2012 Jeep Grand Cherokee Oveland Summit. Service has been great. They supplied me with a rental vehicle on them. I get updates everyday.

So far the wheels and tires have been canceled out as the issue. Balance is 100% correct. Two different sets of wheels and tires have been used in a test. The service manager is puzzled by the issue because they know for sure it's not the isolators. I have to go pick up the vehicle and drop it off in a week. They had to order a $1,000 tool that would identify the issue that has not be clearly specified to me. The troubleshooting has been bumped up to the Chrysler STAR engineers now. I will keep you guys up to date when the car returns next week.
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  #35  
Old 08-03-2013, 08:50 PM
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Re: Tire vibration??

My Gosh things are getting so complicated. My 2013 JGC Ltd. had vibration problems at 68 to 74 mph.(18" latitudes). I had the tires balanced twice and one alignment to get them smooth as they should be, and they are. No vibration at all except the aggravation of 3 or 4 trips to the dealer to get it right. Its been 2000 miles since they finally got it right, and a nervous owner when I get on the highway and go 70 mph. Will it come back ? Who knows. It seems like such a big mystery after reading all these messages. Sometimes technology isn't so great. Oh ya, then their was the 4 visits to the dealer for the creak in the pano glass roof. Got that fixed. Oops, just venting. I really do love my Jeep but none of this should have ever happened.
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  #36  
Old 08-08-2013, 06:03 AM
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Re: Tire vibration??

I went through the same happy horseshit with my '03 Range Rover years ago. LR pointed the finger at GoodYear and GoodYear pointed the finger at LR. After a lot of phone calls and aggrevation, LR began warrantying the tires as the problem occured.
I do have a vibration in my Summit and I am thinking it is the tires (33k) as they are looking a bit worn. I will tell you that it is slight, and dependent on the road surface I am on, nothing like I experienced in the Rover.
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