e30 325i suspension knocking

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Nigel Albright - 20 Jun 2005 14:58 GMT

The shocks and sprints on my 1979 car have just been replaced. However on
some bumps, as found on farm tracks, the suspension (still) 'knocks' - and
that is when travelling quite slowly. Has anyone any suggestions please?

Nigel
UK

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John Burns - 20 Jun 2005 16:48 GMT

> The shocks and sprints on my 1979 car have just been replaced. However on
> some bumps, as found on farm tracks, the suspension (still) 'knocks' - and
> that is when travelling quite slowly. Has anyone any suggestions please?

I'm guessing you meant 1989.

I'd suggest:

Rear subframe bushings
trailing arm bushings
anti-roll bar links
exhaust hitting the body

If it's a higher frequency jiggling sort of noise it might be the
handbrake mechanism or rear strut top mounts.

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Tbird-Steve - 22 Jun 2005 09:28 GMT

1979 was E21 but a common reason for knocking sounds on an E21 and E30 is
the bushing between the top of the rear shock mounts and the body. They are
fairly easy and cheap to replace.

Steve

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