Quote:
Originally Posted by azn370z
I have bc br too. The rear passanger makes a clunk sound when going over bumps. The driver side makes noise too but it has to be a big bump. From what I've read coilovers can make noise because it's mostly metal to metal contact. Some people with coilovers have noise and some don't, some people are bothered by the noise and some aren't.
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Man tell me about it! I have the Megan coilovers and am experiencing the same noises from the rear. Over large bumps, dividers, etc the rear will make a loud 'clunk' or 'boom' on impact. Sometimes loud enough to startle passengers lol...they always ask WTH was that? I thought I could ignore it but it is just pissing me off now. Oddly it ONLY comes from the rear. I have fiddled with the springs/perches and even had them taking out and reinspected to be sure everything is installed correctly...it is. What the hell causes this?
Also, how do you adjust preload on the rear springs? The instructions dont mention anything about this and this was never brought up by the installer. My only thoughts are that the rubber isolator (on top of rear spring perch) is not thick or robust enough to dampen these noises. Did you notice how big the OEM rear spring isolator is?