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Shimmy in hard braking - 2006 Cadillac DTS

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The break roters either need to be turned (shaved down to smooth) or replaced.. When the roters get warn - the slightly worp thus causing shake or shimmy when breaking..

Posted on Sep 24, 2009

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Brake rotors are most likley warped. As others stated here they can possibly be turned on a brake lathe for a few bucks each. The most common cause of brake rotor warp is putting the lug nuts on too tight. To be correctly installed they should be torqued with a torque wrench to the proper torque (usally listed in the owners amnual) and not simply blasted on with an air wrench.

Posted on Sep 24, 2009

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Check brakes sounds like rotors need to be cut or replaced

Posted on Sep 24, 2009

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Sounds like your brake rotor is worped! Your going to need need pads and rotors. Same thing happened to me a few months ago. If this helped please give me a thumbs up! Thanks

Posted on Sep 24, 2009

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Your rotors are slightly warped any brake shop can fix this by turning your rotors to make them true.

Posted on Sep 24, 2009

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1 Answer

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Brake shimmy is due to hot spots on the rotor or drum the metal is actually hardened in the spots causing friction differences when the brakes are applied causing front end to shimmy . If you have your rotors turned the hot spots are still present so I have always justr replaced rotors pads all at once shimmy gone .

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car shakes which is called shimmy shake,if brake pads been replaced wheels still shimmy, you have worn brake rotors with low and high spots,you could have bad wheel bearing, you have worn out tie rod ends and worn out ball joints,you could have tire out of balance,also you could need front end alignment.many things will cause wheels to do the shimmy shake.

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I have a '99 Tahoe that when I brake the steering wheel shimmy's pretty hard, or it feels like it shimmy's front to rear, and then there are times that it brakes just fine. I'm thinking Calipers but I'm...


if you have warped rotors and brake gently you may not feel the shimmy,but will if braking hard.i would fit new rotors and while the wheels were, off also adjust the wheel bearings, if needed.that way you have elliminated two of the most common causes of shimmy.

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chances are, the deceleration shimmy is either the kingpins, or the tie rod ends!!!

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If it shimmies with the brakes applied, it's a rotor problem....but like you say, it shimmies just at a certain speed with no brakes applied, check tires for out-of-roundness. If they look ok, you are looking at a balance problem with the tires.

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I have a 2006 Chrysler 300 Hemi, when I am driving above 60 MPH and apply the brakes hard to slow down I get a bad shimmy in my steering. This does not seem to happen at slower speeds??? Is this a...


if you are getting a shimmy in the wheel this is a good indication that your front brake rotors are warped and upon replacement the lug nuts should be torqued to 100 ft lbs or they might warp again,also the rear brakes should be checked for correct operation to make sure all the stopping force is not left for the front brakes to handle all by themselves,hope this helps

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1 Answer

I have a shimmy in mySteering wheel not all the time it comes on randomly.


In absence of more information, this is usually an symptom of warped brake rotors. A rotor can build up enough heat in a hard stop to be bendable especially with the high hydrolic pressure a brake pad can bring to bear. Simply, If you keep the brake pedal depressed hard after a hard/long stop it can warp the rotor. (NOTE: at a hard stop, as soon as possible let the car creep forward a few inches at a time so the brake pad won't be on any one spot too long, plus keep light brake pressure --only enough to keep the car from rolling). The warped rotor causes the brake pad and caliper to float too far from the rotor and you won't feel the shimmy until you apply brakes. Under brake pedal pressure each time the wheel rotates under brake pressure the rotor and caliper will rapidly vibrate a few millimeters to each side giving the sensation of a shimmy in the sterring wheel. Most of the time this can be corrected by having the rotors resurfaced( aka Turned)

Out of balance or out of round tires can also cause a shimmy but should occur at a given speed range. Warpped rotor shimmy occurs during deceleration.

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2 Answers

Still have Shimmy at around 75 MPH. No slow speed shimmy or shimmy during braking. Just replaced the Front Tension Strut bushings with the Powerflex polyurethane ones. What else could be contributing...


Balance your wheels at a good shop. Have the tires checked for out of round/side wear. Are there any sidewall bubbles?

You could have a problem with the wheels themselves...but it is rare.

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