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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 11-01-2013, 02:24 PM
mikesevel mikesevel is offline
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Location: new braunfels, tx
 
Join Date: Jun 2011
Posts: 159
Mein Auto: 328i convertible '08
Paint new rotors?

My '08 E93 will be new brake pad/rotor bound in the next few months. The original rotor hats (visible through the wheels) sure look crappy with rust marks. I bought new BMW rotors. Am I asking for trouble painting them with high temperature silver paint? I am just trying to avoid a repeat of the rust but will the paint peel or burn off? I am in Texas so road salt or freezing temperatures are not an issue. It does get hot as H E Double Hockey Sticks though. Y'all say what?
Mikey
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  #2  
Old 11-01-2013, 02:40 PM
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BB_cuda BB_cuda is offline
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Location: Clear Lake, Texas
 
Join Date: Nov 2011
Posts: 666
Mein Auto: 2011 335D Msport
Mike, i also live in Texas. I bought a slightly used (6,000 miles) from Pennsylvania. The inner hats were very rusty. I thought it looked very crappy. I pulled the wheels and used some rust eater and steel wool. I used silver rustoleum. I have driven for 22,000 since and the paint isn't burning. I do tire rotations and sometimes touch up the paint though. I don't know how much they will rust here versus a rust belt state. I would do the same thing with your new rotors. The keepers on the brake pads were also rusty. I applied same paint with a small brush there too. Before haters start, I painted the keepers to blend in with everything else around there that is either gray or silver. With the rust on them prior, they definately stood out. Enjoy the new brakes.
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Old 11-02-2013, 07:57 AM
R1200 R1200 is offline
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Location: Canada
 
Join Date: Dec 2006
Posts: 650
Mein Auto: 328XiT and R1200C
Instead of high temp silver paint consider using cold galvanizing compound. It's used by the US Navy and it very effective on rotors and brake calipers to stop rust. It's also easily removed by the pads should you get a little on the rotor surfaces.

Zinc on steel is the better way to keep it from corroding, in my experience.
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328XiT Sonora

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Old 11-02-2013, 08:05 AM
hondo402000 hondo402000 is offline
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Location: Charlotte, NC
 
Join Date: Nov 2012
Posts: 1,840
Mein Auto: 2007-335 HTC
I painted mine too, no issue, I also took the calipers off, used a sanding disc on a 4 inch grinder and ground all the casting flashing on the calipers off, smoothed them out and painted them silver too

the calipers are Aluminum so it was an easy job, Even aluminum will oxidize over time
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