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Thread: Suspention Bushing Material

  1. #1
    Member 87325is's Avatar
    Join Date
    Jan 2005
    Gaithersburg, MD

    Suspention Bushing Material

    I have a 87 325is. It never comes out of the garage except for the weekends and has about 170k on many of the original rubber bushings. As soon as our baby is here and i find a house with a two or three car garage, i would like to start going to track events. Any thoughts on solid, delrin, Urethane ,rubber, etc. would be helpful as i am going to go through the car and replace all/most.

  2. #2
    Senior Member 1996 328ti's Avatar
    Join Date
    Jun 2004
    Greenville, SC
    I would not do delrin or solid and don't even think polyurethane is worth it.
    I have polyurethane rear trailing arm bushings and subframe bushings.
    If I had to do it over I'd stick to stock.
    I do have solid M3 lower control arm bushings though.
    BMW CCA #146825 |

  3. #3
    Senior Member
    Join Date
    Sep 2004
    On the E30 type suspension I think that poly rear subframe mounts are a must. Other poly bushings are fine, and do help out a track/autocross oriented car. However if you street drive the car, poly bushings are a bit harsher.

    Delrin and solid bushings are best for track only cars, that are seldom street driven. LOTS of NVH (noise, vibration and harshness) and more maintenance as they need to be lubed and checked for wear.
    Terry Carraway
    02 Topaz E46 M3 SMG
    00 Dakar M Roadster
    95 Alpine E36 M3 LTW
    SCCA Spec Racer Ford Red/White

  4. #4
    Senior Member
    Join Date
    Mar 2005
    Ft. Belvoir
    Face it E30's are loud. Mine has devolped rattle only in the last year due to the J stock suspension.

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