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12-25-2019
I've seen black zinc-plated rotors advertised that fit the GXP. I don't think I've ever seen a car with these installed, but I believe they would look cool as ****. Would they stay black over time, or will the zinc wear away? If it does, would that be a reliable indicator that the rotor needs to be replaced, or would it just be a surface thing, just as if they were painted, and just as useless?
12-25-2019
the black wears off where the pads touch, the rest stays black and keeps it from rusting.
12-25-2019
The Buick Allure with the 5.3 runs the same size brake rotors as the GXP but they are just not drilled. Those should come with the black coating if I remember right.
Double check the parts for measurements if that is something you are considering. I'd prefer the non drilled rotors myself.
12-31-2019
Might depend brand. I had R1 Concepts off ebay black. They did get zinc corrosion after just a tiny amount of road treatment residue from winter. I wiped if off, cleaned em with brake cleen and was good to go. They weren't like.. Jet Black anymore, but they looked alright.
There's pics in my ride thread, but I forget which page. Lol
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