Fff-fff-fff-fff-fff - wheels - 986 Forum - The Community for Porsche Boxster & Cayman Owners

eightsandaces · 09-20-2010, 02:33 AM

If it's on a jack can you get the noise to occur with a manual spin of the tire? This might help in isolation.

manolo · 09-20-2010, 07:31 AM

You may also want to check the rotor guards. I had a similar metallic noise and it was the guard touching the rotor, just lightly.

RandallNeighbour · 09-20-2010, 10:58 AM

Is there any abrasion on your wheel liner from your tire?

jcb986 · 09-20-2010, 11:26 AM

Me, I am leaning to a wheel bearing problem...especially if you have ruled out everything else.

Wingnut2u · 09-20-2010, 05:57 PM

I just replaced my wheel bearings because they were making a similar sound as yours. I also am going to venture a guess and say wheel bearings.

willd · 09-21-2010, 02:54 AM

To answer a few Q's first;

- Noise doesn't happen when it's on a jack.
- I did check the rotor guards, couldn't see it touching anywhere.
- No wear anywhere from the tyre.

A friend of mine has asked me if I had the "anti-vibration shims" on my pads.

Well, when I changed the rotors/discs, of course i took the pads out, and put them back in again when putting back together, but I never noticed any shims.

He thinks that is what the issue might be, and that I might be able to fix it with some of these;

http://cgi.ebay.co.uk/Universal-Self-Adhesive-Anti-squeal-Brake-Shims-/250695039221?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a5e96b8f5

So I might give that a go. If that doesn't work, then I guess I need to look at the bearings...

Thanks for the replies!

eightsandaces · 09-21-2010, 03:00 AM

Quote:

Originally Posted by willd

To answer a few Q's first;

- Noise doesn't happen when it's on a jack.
- I did check the rotor guards, couldn't see it touching anywhere.
- No wear anywhere from the tyre.

A friend of mine has asked me if I had the "anti-vibration shims" on my pads.

Well, when I changed the rotors/discs, of course i took the pads out, and put them back in again when putting back together, but I never noticed any shims.

He thinks that is what the issue might be, and that I might be able to fix it with some of these;

http://cgi.ebay.co.uk/Universal-Self-Adhesive-Anti-squeal-Brake-Shims-/250695039221?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a5e96b8f5

So I might give that a go. If that doesn't work, then I guess I need to look at the bearings...

Thanks for the replies!

Did you manually spin and inspect every wheel? I'm not thinking it's the pads, I'm jumping on the bearing bandwagon, it might be silent in the air because there is no load on the bearings.