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Old 11-27-2013, 04:29 PM   #1
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Front End Shimmy NOT DW help.

Hey guys, I知 having a shimmy when cruising on the highway and hitting indention or bump in the highway at anywhere between 80km/h and 100 km/h (~60mph) i have momentary shimmy only right after i hit a bump I知 not sure if it makes difference if I知 hitting it straight on or if I知 hitting the bump while having the wheel slightly turned (curve).

suspension is rather stock: I have a skyjacker steering stab, and aftermarket moog greasable TRE, greasable balljoints. everything was changed less then a year ago.

the tires i have on now are stock size 255 70 r 18 on stock share rim, they are arctic claw tires not sure what rating they are at..

there are not wobbles or shimmy when driving at whichever speed, it only shows up right after i hit a bump in the road at moderate highway speed.

The sensation is of the steering where shimming back and forth, i don稚 need to slow down, it usually stops doing the shimmy shorty after (1-2 seconds) without the need for me to slow down or anything.

Any help?insight? where do i start looking? what more info can i give you guys?

Thanks!

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Old 11-27-2013, 04:46 PM   #2
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Sounds like something may be loose and the bump releases the tension on everything. Another thing could be your tires need a new balancing!

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Old 11-27-2013, 04:52 PM   #3
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IMO any time something like this happens first thing to check is the tires,,,balance and rotate from front to rear...in this circumstance I would move BOTH front tires to the rear.moving just one it is possible it will still be there and may give a false sense of okay not the tires....if possible get the spare in the mix.....the more variables/ tires that are tested on the front the better.... it leaves no doubt that it is something other than the tires if it never goes away....GOOD LUCK!!
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Old 11-27-2013, 04:52 PM   #4
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Sounds like something may be loose and the bump releases the tension on everything. Another thing could be your tires need a new balancing!
If balancing is the issue, wouldn't the tire shimmy or wobble also when not hitting bumps?!

thanks!
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Old 11-27-2013, 05:03 PM   #5
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If balancing is the issue, wouldn't the tire shimmy or wobble also when not hitting bumps?! thanks!
Not always. But balancing is the cheap place to start! I had a shimmy at 40-45mph it was the tires. Balanced and it's gone.
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Old 11-27-2013, 05:12 PM   #6
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i will look into it! can it be the tires by any chance? bad tires?
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Old 11-27-2013, 05:36 PM   #7
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i will look into it! can it be the tires by any chance? bad tires?
IMO it can be the tires...first thing that would come to mind would be a "broken belt"...I also know from experience this can also be caused by a "patched" tire.
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Old 11-27-2013, 06:11 PM   #8
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Tires never been patched, but they are an el cheepo winter tire, how can i trouble shoot the tire to make sure it isn't or is the cause?
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Old 11-27-2013, 06:33 PM   #9
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Start with driver side and rotate tires front to rear. Drive it. If it doesn't change, rotate the passenger side. This way you can pin point a bad tire or wheel.
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Old 11-27-2013, 07:00 PM   #10
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When you rotate. Driver side from to passenger rear. Then Passenger front to driver rear. Personally I'd start with a Balance...they can tell you if a tire was off, and how much weight it needed etc. At that time rotate them too.
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Old 11-30-2013, 11:54 AM   #11
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IMO any time something like this happens first thing to check is the tires,,,balance and rotate from front to rear...in this circumstance I would move BOTH front tires to the rear.moving just one it is possible it will still be there and may give a false sense of okay not the tires....if possible get the spare in the mix.....the more variables/ tires that are tested on the front the better.... it leaves no doubt that it is something other than the tires if it never goes away....GOOD LUCK!!
Exactly. I recently had a shimmy after I hit a bump and foolishly thought that I would get around to getting it looked at later. Well it turned into full blown DW. I took it to get it aligned and the tires and alignment were WAY off. Fixed the issue.

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