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Thread: Lowering your 5

  1. #1
    Join Date
    Apr 2004
    Location
    Colchester UK
    Posts
    30

    Default Lowering your 5

    Having just fitted 35mm lower springs along with new shocks (it seemed a shame not to do both at the same time) I notice that my rear wheels are now noticeably cambered. Do I need to sort this out with a correction kit? I am concerned about tyre wear, although the handling doesn't seem to be adversely affected

  2. #2
    Join Date
    Jan 2004
    Posts
    1,171

    Default

    only recourse is eccentric trailing arm bushings to dial in a bit more positive camber.
    Then there is the issue of installing them properly to get the desired result. Perhaps someone will post who has done so successfully. All suspensions when dropped increase negative camber because suspension travel is a natural arc as viewed from the front or rear of the car. Most with lowered BMW's simply live with the increased negative camber which is more pronounced in the rear which has more negative camber to begin with. This is more problematic in staggered wheel/tire combo's as increased wear on the inside rear tires is pretty common and one can't therefore rotate a staggered wheel combo front to back to prolong tire life.
    HTH,
    George

  3. #3
    Join Date
    Apr 2004
    Location
    Colchester UK
    Posts
    30

    Default

    That's more or less what I thought George - my Nissan came back into spec by adjusting the eccentric bushes and to be honest I assumed that the E34 didn't have such an adjustment.

    I will take the car into a 4 wheel laser alignment garage and see what they can do with it - I was going to get the tracking checked anyway.

  4. #4
    Join Date
    Dec 2003
    Posts
    835

    Default We held onto trailing arms from the parts car to have 'em cut & welded..

    to am effective shorter dimension for this purpose.

    For now, I'll just enjoy the damn thing with all 6 injectors firing.

    George, shoot me yer address sometime so I can send ya a girlie calendar from Hawaii. baconmartin@hotmail.com


    Quote Originally Posted by George M
    only recourse is eccentric trailing arm bushings to dial in a bit more positive camber.
    Then there is the issue of installing them properly to get the desired result. Perhaps someone will post who has done so successfully. All suspensions when dropped increase negative camber because suspension travel is a natural arc as viewed from the front or rear of the car. Most with lowered BMW's simply live with the increased negative camber which is more pronounced in the rear which has more negative camber to begin with. This is more problematic in staggered wheel/tire combo's as increased wear on the inside rear tires is pretty common and one can't therefore rotate a staggered wheel combo front to back to prolong tire life.
    HTH,
    George
    erased due to slander

  5. #5
    Join Date
    Jan 2004
    Posts
    1,171

    Default Martin, what do you have in mind...

    to modify the rear arms to dial back in more positive camber for a lowered suspension? Are you going to press in eccentric bushings into these arms or physically alter the geometry of the arms to change hub orientation and maintain stock concentric bushings?
    Better be dam good if its the latter
    George

  6. #6
    Join Date
    Dec 2003
    Posts
    835

    Default I was thinking we could try 'em on Jeff's car, once he gets some sport springs.

    But you're right, eccentric bushings would be the way to go. With the spare arms out & free, the opportunity is there.


    Quote Originally Posted by George M
    to modify the rear arms to dial back in more positive camber for a lowered suspension? Are you going to press in eccentric bushings into these arms or physically alter the geometry of the arms to change hub orientation and maintain stock concentric bushings?
    Better be dam good if its the latter
    George
    erased due to slander

  7. #7
    Join Date
    Dec 2003
    Posts
    1,640

    Default pbbt. my car rides 20 times better than yers and those saggy bavauto rubber bands

    Quote Originally Posted by Martin in Bellevue
    But you're right, eccentric bushings would be the way to go. With the spare arms out & free, the opportunity is there.
    Bellevue WA
    90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
    86 Porsche 951 - Track Toy

  8. #8
    Join Date
    Feb 2004
    Location
    Wichita KS
    Posts
    180

    Default

    Toe in or out will wear tires faster than the camber, and the geometry of semi-trailing arms results in toe change as well as camber with change in ride height. When I lowered my old e12 car it ate up rear tires pretty quickly--alignment check showed a handful of toe out as well as negative camber. I could feel the toe out as oversteer -- yeeehaaa. I used the eccentric bushings to get toe back in spec and left the negative camber. Tha car handles great, and doesn't chew up tires badly any more.

  9. #9
    Zaphod Beeblebrox Guest

    Default I have spare arms. They Rock!

    Quote Originally Posted by Martin in Bellevue
    But you're right, eccentric bushings would be the way to go. With the spare arms out & free, the opportunity is there.

  10. #10
    Join Date
    Jan 2004
    Posts
    4,150

    Default But you only have one spare.... : )

    .

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