E34 525i suspension problem - crashing into potholes

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  1. E34 525i suspension problem - crashing into potholes 
    #1
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    Y_Cymro's Car Details
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    Hi
    I've just bought an E34 525i and found that it's fitted with Bilstein B8 dampers and lowered springs. The dampers are the ~50mm diameter upside down jobs.
    The offside front suspension crashes out over speed bumps and potholes - even when driven slowly. It goes solid as if hitting the bumpstops. The near side is fine which suggests it can't be the design. I've taken the strut off and the damper rod moves smoothly all the way into the damper case so it isn't bottoming out. I've changed the upper suspension arm, a/roll bar drop link and the strut top mount as I thought it was that. I can't find any wear in other suspension components.
    I'm wondering if the valving could have failed in the damper - driving along normally is fine until hitting a pothole or ridge.
    All thoughts appreciated.

    Also, do you have the number for Bilstein in the UK?
    Thanks
     
     

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    #2
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    mark@vorny.co.uk's Car Details
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    Anybody able to offer advice on this ?
    2013, Porsche 911 Carrera 4S, PDK, Sports Exhaust, Chrono, etc, etc

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    #3
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    Lamper's Car Details
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    Not much advice to offer, except to try and avoid potholes in future; and take it easier going over speedbumps!

    Even the worlds best suspension won't take a battering forever!!!!!
     
     

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    #4
    Doy
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    Quote Originally Posted by MrLamper View Post
    Not much advice to offer, except to try and avoid potholes in future; and take it easier going over speedbumps!

    Even the worlds best suspension won't take a battering forever!!!!!
    maybe not the answer he was looking for. + its only on one side of the car so i'm sure someone may have something valuable to add as its a fault rather than an observation.
    2005 E53 X5 3.0d Sport
    2001 E46 316ti se Compact
    1988 E30 325i Convertible
    1999 E46 323ci se Coupe- sold!
    2002 E46 330d se Saloon - sold!
    1995 E36 M3 Coupe - sold!
     
     

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