Z06Fix

Dad's 08 Z has started to have some vibration at light to medium brake pressure. If you go full on the brakes it's nice and smooth and they stop great. I'm assuming this is the dreaded uneven pad material transfer that I have read about. Can I simply pull the rotors and take some sand paper to them then re-bed the pads back in?

BTW: It's still on stock pads and has 7K miles currently.

Thanks,

Eric

95jersey

rotors are trash, need to replace

Z06Fix

Is it safe to keep running them? I guess he could always just take it in and have them replaced under warranty.

Jason

If it's under warrenty, I'd drop it off and get a Caddy loaner until it was fixed.

95jersey

I beleive warranty does not apply to wearable parts such as brakes and clutch. YOu can always try. But it is definately the rotors.

UstaB-GS549

I would go with the sandpaper.

Stoptech used to loan out Hawk Blue pads. A lap or two around the block with cold Hawk Blues will take everything of the rotor surface.

Stoptech also has a link to a white paper written by Carroll Smith about "warped" rotor myth.

If can see or feel the built up on the surface you also might be able to remove it with the end of a flat file or hard gasket scraper.

Lawdogg

Agree that it is likely pad transfer. I had the same problem. After a day at the track the uneven pad build up was gone.

dvandentop

yes more then likely pad transfer just take a palm sander on them and should be good to go.

Datawiz

Yes

Yes

Replacing the rotors on an '08 Z is a PIECE OF CAKE. Don't get a shop involved (unless GM will do it for free) and don't have someone "turn" the rotors. Buy new ones online (about $100 each), remove the wheels, remove the calipers and use some "zip strips" to chain the calipers to the upper suspension. Once the caliper is off, the rotor (free floating) comes right off. Put the new one on and put everything back together.

I'm about to do this in the next couple of months. I'm seeing the hairline cracks start to show at the drilled holes.

Naturally, my car gets abused just a bit.