Brake Replacement Question

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Jan 26, 2018 | 08:58 AM

geezel

Thread Starter

Burning Brakes

Joined: Nov 2003

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From: Herriman UT

Brake Replacement Question

The new GM front brake rotors I received for my 2007 Z06 are 100% prime painted including the contact surfaces at the brake pads. Do I need to remove the primer at the contact surfaces, or does the initial braking process take care of that?

Jan 26, 2018 | 09:02 AM

timd38

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From: Hudson WI

NCM Sinkhole Donor

Paint will be off after one or 2 stops.

Jan 26, 2018 | 09:41 AM

geezel

Thread Starter

Burning Brakes

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From: Herriman UT

OK. Thanks.

Jan 26, 2018 | 04:41 PM

Dave S

Retired & lovin' it!

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From: Jackson NJ

Quote:

Originally Posted by geezel

Mine were the same....first couple of stops scrubs off the coating. However, before you mount the rotors, you should wipe down the braking surfaces (front & back) with brake cleaner to get rid of any oil or contaminants from the manufacturing process on the surfaces.

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Last edited by Dave S; Jan 26, 2018 at 04:43 PM.

Jan 26, 2018 | 08:53 PM

Sayfoo

Safety Car

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From: Orange County Ca

I would clean it off. Lacquer thinner? A light sanding?
I know it will wear off, but where does it go?
Will it contaminate your pads?

Jan 26, 2018 | 10:09 PM

geezel

Thread Starter

Burning Brakes

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From: Herriman UT

I guess I'll remove it.

Jan 26, 2018 | 11:08 PM

HOXXOH

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From: Peoria/Phoenix AZ

C6 of Year Finalist (performance mods) 2019

When I plated my rotors, I put the old pads on. Then drove it a bit to wipe off the plating in the swept area, before putting the new pads on. The old pads then went in the trash along with the zinc plating.
It was an extra step, but got no crap on the new pads.

Feb 5, 2018 | 11:26 AM

itomh

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From: Indianapolis

Quote:

Originally Posted by geezel

I would not be concerned, braking will clean it off. Another poster recommended cleaning them off first and let the old pads clean them up and toss old pads away due to pad contamination. If that's the case, what happens to all the road grime that gets on pads from just daily driving? Wait......Does that mean my new pads are now contaminated? Now I have 4 cars I have to redo!!