Question about Subaru Legacy

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What is the problem if the car is shacking in a high speed? My car doesn't vibrate on high speed until i change the the tyres into new ones.

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  • cheap repair Oct 01, 2010

    your tires may not be balanced properly, defective, or they are out of round



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Take the tires back to whoever installed them and have them re-check the balance. vibrations at high speeds are usually a balance issue.

Also make sure all the lug nuts are tight!

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Posted on Oct 01, 2010

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Sounds like you need to return to the tire shop and have them spin balance those new tires. also it is real important that your wheels be torque to the proper specs, if not you could end up with bent rotors.

Posted on Oct 01, 2010

  • Jeremy W.
    Jeremy W. Oct 01, 2010

    Bent Rotors? Did you mean Warped Rotors? I know the terminology thing is picky but using the right words VS the wrong words could be the difference between a $100 bill and a $1000 bill in the auto industry.

  • mike_mostowa Oct 02, 2010

    thank you for the feed back, and yes the right terminology is important because only with good Information can a good repair be made. I do try to choose my words carefully and bent is that word, because when an over torque wheel is left unchecked it pulls the rotor out of shape due to the heat up and rapid cooling. This leaves the rotor bent and you are unable to turn back to specs. . Subaru as well as others see this as a problem and tell their FACTORY trained mechanics not to air impact the wheel on but instead snug them up and torque them down to avoid this problem. the term "warped" is used to define what has happened to the rotor at the end of the braking cycle and is the reason to turn all rotors with each brake pad replacement as well as the turned surface allows the pads to seat to the rotors completely.Also scuffing rotors with sand paper or some other device dose not do it. If the rotor is not turned flat it also can prematurity wears the pads out . This is why I always suggest that a fully licensed garage or factory service department do this job. They are up to date both with equipment and data to assure that your car will stop when it needs to and not end up killing someone because you wanted to save money.



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Sounds like you need a brake job (for shuttering when stopping), new tires because of un-even wear, and possibly an alignment (so the next pair of tires don't wear out. While they are checking, they should check the shock absorbers (struts). This is a fairly old car and will likely need stuts and alignment.

If money is tight, look into some used tires. The brake job is not critical until you hear noise. Keep the speed down if you can't afford the alignment and struts.

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Good luck

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You have a seperated tire or a loose wheel. A seperated tire happens when the tire's plys seperate from each other, this makes the car bounce or shake at low speeds. High speed vibrations are caused by unbalanced wheels. Vibrations under braking are the rotors.

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any way you feel vibrations travel in whicth speed?
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