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Thread: what is the difference between upper and lower arms

  1. #1
    Join Date
    Jan 2004
    Location
    monroe, LA
    Posts
    1

    Default what is the difference between upper and lower arms

    i just bought a 97 e39 528 and this dayum car has the shimmies under braking only. i have replace the thrust arms and it only cured about 75% of the prob. would the lower arms help if changed? any ideas would be appreciated.. TIA

  2. #2
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,839

    Default check your roters for warpage,

    the tires could be going square or the rims could be bent. If you replaced the thrust arms there isnt much left besides the rest of the steering equipment.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  3. #3
    Join Date
    Mar 2004
    Location
    Austin, TX
    Posts
    221

    Default

    I have an E39 also. They are very sensitive to proper torque for the lug nuts. Have you tried using a torque wrench? I think it's 90ft#. However, it could be the rotors.

  4. #4
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,839

    Default could also simply be...

    dirt/scale between the rim, rotor & rotor & hub.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

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