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Longun

Fixed - Very Annoying Rattle From Rear - Cause - Broken Brake Pad

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I've got a rattle that I thought was being caused by my broken downpipe. After swapping it turns out not.

I got someone to drive so I could have a better listen and it appears to be coming from the near side rear. I've checked pulled, hit and shook everything in sight and the only thing that appears able to rattle is the below. Question is what is it and what does it do?!? Appears to do nothing to me.

metal.jpg

Help please I don't want to drive all the way to the new forest sounding like its falling appart.

Edited by Longun

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Well it might be a rattle creator. Guessing I'll be fine to run without it to see if its the cause at least. Will report back.

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Id try tighten it first.

That said it might be supposed to have some play in it???

Have you checked rear springs too?

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Not sure if it tightens either but will take a look :thumbsup:

Yep gave them a bash with a rubber mallet and nothing.

Rattle is on small quick bumps, not so audable on big bumps.

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I know it's not much use before the meet tomorrow, but you could try mounting on of these on the underside of the car then going for a drive and see if anything obvious knocks or rattles . . .

http://www.ebay.co.uk/itm/Lighter-Spy-Camera-Spy-Cam-Camcorder-USB-Mini-DVR-DV-/320855069708?pt=UK_CCTV&hash=item4ab473d40c

Cheers

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Yeah ive got three so called vibration absorbers, other two are around 1kg each!

Dont rule out shocks either. Or rear trailing arm bushes

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OK so its not the vibration thing as it still does it with it removed. Got the car booked in for 9am tomorrow morning. If they find it or assure me somethings majors not broken I'll still head down.

Edited by Longun

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rear top mounts can cause rattles ,but are very hard to diagnose as faulty

plus the upper wishbone mounts to the hub with a ball joint.they need minimal play to rattle big time

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Didn't check the tank. Still sounds just like a loose exhaust clamp but the BMW doesn't use them.

Edited by Longun

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Is is like a bump or an actual rattle? Loud or just annoying? And have you lowered it recently?

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Its a metal rattle. As above its just like a loose exhaust clamp sound. I hit everything under the car and around the wheels with a mallet but can't generate the noise. Drive it and its immediate. Its loud and annoying ;)

Cars on standard sport springs.

Edited by Longun

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i had the same, turned out to be the brake caliper retaining springs! the ones that you can see through the wheel. easy to sort by taking them off and bending some tension back into them and refitting.....job done :thumbsup:

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Have a look in your spare wheel well, might be something rattling round in there?

Nothing rattling in the car. The sound gets much quieter with the windows up. Plus I've had the rear seats down to aid hearing it.

i had the same, turned out to be the brake caliper retaining springs! the ones that you can see through the wheel. easy to sort by taking them off and bending some tension back into them and refitting.....job done

Now that has some legs. That'll be the first thing I check in the morning.

Thanks for throwing ideas in all its much appreciated :thumbsup:

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Hope you find it! Good to have someone there next to you though, then they can listen as well

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Got to the bottom of it today. Loose brake pad. Upon removal we found the clip that holds the inside pad into piston was broken off and allowing the pad to move around. Also found cracked pads on both sides. They only looked a few months old so must have been swapped quite recently. Looked cheap, no markings to help me find the manufacturer, which is annoying as I would have returned them. Fitted ferodo's and the rattle is cured :thumbsup:

Will be checking the fronts tomorrow, as I'm now questioning if cheap pads have been fitted all round.

Thanks for all the advice and pointers.

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Is run out basically like a damaged dusk surface? I can't feel any vibration.

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