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  #1  
Old 01-28-2010, 08:50 AM
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high speed shimmy?

after installing my new brake rotors, i'm getting a slight shimmy in the steering wheel between 65 and 80 MPH.

Any ideas? what bolts i should check?
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Old 01-28-2010, 08:55 AM
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Re: high speed shimmy?

when you hit the brake or all the time?
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  #3  
Old 01-28-2010, 09:32 AM
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Re: high speed shimmy?

all the time, the brakes are definately not warped.
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Old 01-28-2010, 09:34 AM
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Re: high speed shimmy?

How did you tighten the lug nuts? Torque wrench using OEM specs or air gun?

You may have overtightened the lugs by a lot.
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Old 01-28-2010, 09:35 AM
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Re: high speed shimmy?

or improper balance ???
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Old 01-28-2010, 10:04 AM
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Re: high speed shimmy?

i'll check the lug nuts, what is the factory torque spec?

all 4 tires were balanced before they went on, so i cant imagine that they are imbalanced.
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Old 01-28-2010, 10:11 AM
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Re: high speed shimmy?

sounds like the rotors are out of balance...which can happen with rotors
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Old 01-28-2010, 10:16 AM
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Re: high speed shimmy?

Did you break them in yet?
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Old 01-28-2010, 10:35 AM
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Re: high speed shimmy?

maybe the rotors just need to break in... wil the rotors wear "into" balance?

or do i have to do something else?
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Old 01-28-2010, 11:01 AM
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Re: high speed shimmy?

Rotors won't true themselves, I would start in the rear. Usually something felt at >50mph is a problem in the rear. Make sure you cleaned all the rusted crap off the hub with a wire brush.
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Old 01-28-2010, 11:51 AM
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Re: high speed shimmy?

contact the seller and tell them you have a shimmy since you installed them
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  #12  
Old 01-28-2010, 12:50 PM
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Re: high speed shimmy?

how can i tell which rotor it may be?

The shimmy feels like it is comming from the front, the way i feel it in the wheel makes me think that. I may be wrong tho.
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'09 Modern Blue STR8, fully loaded, 5% tint all around 40% windshield, 4" Bwoody, 5" Tips, 6K HID Reverse,lows,fogs and switchbacks. Blacked out LED tails. PX8 rear step. Body matched ANTIVENOM hood. Lots of BT goodies, tuned by FRP. Best 1/4 ET so far: 12.65

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