Dreaded shimmy

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yatisr
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Dreaded shimmy

Post by yatisr »

I have changed the lower arms and steering rack bushes on my car and notice that I still have a slight shimmy at 90-100kmh, which goes away at higher speeds. Assuming that this is not a wheel balancing issue, what else could be causing this issue? A defective upper strut mount, possibly?

Thank you in advance for any advice and suggestions.

Yatis


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uwbuurman
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Re: Dreaded shimmy

Post by uwbuurman »

As it happens at those speeds, I do think is is a wheel balancing issue. If it is not, it can be a bunch of other stuff. Rotten steering rack, steering rods, bushings etc
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polov8
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Re: Dreaded shimmy

Post by polov8 »

Mine has the shimmy between 40-45mph (65-72kmh). I've swapped everything but the rack, so I guess I'll have to look into that some time....
Andy
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Jeroen
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Re: Dreaded shimmy

Post by Jeroen »

If your car has a manual steering rack, it may also have sloppy steering rack bushes.
Regards/groeten, Jeroen
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uwbuurman
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Re: Dreaded shimmy

Post by uwbuurman »

Aren't they all manual? You mean non powersteering, I think?
It's the man next door!

1978 BMW 323i
1980 BMW 528i maior restitutio
1987 BMW 325iA cabriolet
2015 BMW 320dA touring xDrive High Executive ///Msport
2016 BMW 420dA Gran Coupé
yatisr
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Re: Dreaded shimmy

Post by yatisr »

Thank you all for the advice. I have just changed the steering rack bushes on my non-PAS steering. The lower arms are new too. The steering rods are fairly new too. So, I can rule out these possible sources of the problem. I will try balancing the wheels again and see if there is any improvement.

Thanks again.

Yatis
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Jeroen
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Re: Dreaded shimmy

Post by Jeroen »

Fingers crossed!
Regards/groeten, Jeroen
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