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Old 12-22-2013, 06:49 PM   #1
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Shimmy after Rotation... Why?

I have a slight steering wheel shimmy at 50 mph since my tire rotation... Why does this happen sometime?

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Old 12-22-2013, 06:53 PM   #2
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One of the wheels might lost a weight?

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Old 12-22-2013, 07:11 PM   #3
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Or it could be abnormal tire wear that is being exacerbated now that you've changed their positions. You could put the tires back to their starting positions, or just live through the shimmy and see if the tires will wear and the shimmy fades. If the shimmy is really bad, don't jeopardize your safety.
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Old 12-22-2013, 07:11 PM   #4
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The tires most likely need to be re-balanced.
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Old 12-22-2013, 07:13 PM   #5
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Aftermarket wheels? Have you taken off the rotor retaining clips? If its that bad have them balanced again.
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Old 12-22-2013, 09:15 PM   #6
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Quote:
Originally Posted by The_Chief View Post
I have a slight steering wheel shimmy at 50 mph since my tire rotation... Why does this happen sometime?
Someone didn't tighten all the lug nuts? I've heard of it happening.
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Old 12-22-2013, 09:20 PM   #7
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Mud caked on the wheel?
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Old 12-22-2013, 10:24 PM   #8
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Balancing...
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Old 12-22-2013, 10:28 PM   #9
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One of the back wheels was out of balance and moved up front you will now feel it in the steering wheel. The front end is more sensitive then the rear to vibration.
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Old 12-22-2013, 10:41 PM   #10
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One of the back wheels was out of balance and moved up front you will now feel it in the steering wheel. The front end is more sensitive then the rear to vibration.
^^^This
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Old 12-22-2013, 11:01 PM   #11
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Agree, balance
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Old 12-22-2013, 11:07 PM   #12
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At the very least I'd re-balance the tires that were moved up front. Balancing all 4 tires won't hurt either. Inspect the tires for cord separation or damage first though.
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Old 12-23-2013, 11:00 AM   #13
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I recently experienced the same issue. Rebalanced the tires that do not show any wear after 5000 miles and cannot locate the problem. Realigned it, checked all suspension components including ball joints and etc.
Mine seems more noticeable when I just barely turn the steering wheel to the left. Does not occur when in four wheel drive!!!
It is driving me absolutely insane.
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Old 12-24-2013, 12:23 PM   #14
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Quote:
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One of the back wheels was out of balance and moved up front you will now feel it in the steering wheel. The front end is more sensitive then the rear to vibration.
X3. I have one tire I just can't get balanced. 3rd time now- 2 shops. Slight shimmy over 45mph. I know it's the tire because we recently rotated it to the front- the shimmy came back. Going to insist they pop the bead and spin the tire on the wheel and then re-balance. If you have aftermarket wheels there could be a heavy spot or uneven area on the wheel. Add a heavy tire that's off just a little and it's tough to balance.
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Old 12-24-2013, 12:45 PM   #15
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Originally Posted by JKralph View Post
Or it could be abnormal tire wear that is being exacerbated now that you've changed their positions. You could put the tires back to their starting positions, or just live through the shimmy and see if the tires will wear and the shimmy fades. If the shimmy is really bad, don't jeopardize your safety.
My money is on this.
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Old 12-24-2013, 01:13 PM   #16
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X3. I have one tire I just can't get balanced. 3rd time now- 2 shops. Slight shimmy over 45mph. I know it's the tire because we recently rotated it to the front- the shimmy came back. Going to insist they pop the bead and spin the tire on the wheel and then re-balance. If you have aftermarket wheels there could be a heavy spot or uneven area on the wheel. Add a heavy tire that's off just a little and it's tough to balance.
I had the same issue. I couldn't get one tire balanced after several attempts until I had it road force balanced. The tire was slightly out of round which caused a shimmy between 45-50 mph. By rotating the tire on the wheel, the shimmy is gone.

Find a shop that has a Hunter Road Force Balancer. My local DT shop has one but didn't use it until I requested it. This is a good place to start although my DT shop isn't listed:

http://www.gsp9700.com/search/findgsp9700.cfm
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Old 12-24-2013, 01:53 PM   #17
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Basically the balance doesnt make as much of an issue on the back as it does the front, you probably rotated an out of balance tire to the front...

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