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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 07-13-2011, 04:20 PM   #1
ausanada
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Rust on rotor

Hi all, it's me again.

I got my brakes and rotors changed a week ago and they looked good and shiny, but it's been raining over here and the rotors now have a lot of rust on them (I haven't been driving). I drove a few miles but there's still some rust on the rim and the area near the nuts. Do I just use CRC Brakleen and scrub it off?

It rained last night and now the side where it makes contact have rusted again!

See pic!
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Old 07-13-2011, 04:25 PM   #2
OrientBlau
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This must be your first car as a 17 yr old?

EDIT:

Is this the family car?
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Old 07-13-2011, 04:29 PM   #3
ausanada
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Originally Posted by OrientBlau View Post
This must be your first car as a 17 yr old?

EDIT:

Is this the family car?
It's mainly for groceries on weekends. Public transit is decent here.
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Old 07-13-2011, 04:25 PM   #4
5ynd1cat3
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I used to take the rotors off, wire brush the area down to knock all the surface rust off, tape off the surface that comes in contact with the pads, and paint the rest with a high-temp engine paint. Once I did that, my rotors never rusted again.
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Old 07-13-2011, 04:32 PM   #5
ausanada
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Originally Posted by DerMooch View Post
I used to take the rotors off, wire brush the area down to knock all the surface rust off, tape off the surface that comes in contact with the pads, and paint the rest with a high-temp engine paint. Once I did that, my rotors never rusted again.
Thanks, I'll try it when I do my rear brakes/rotors.
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Old 07-13-2011, 04:28 PM   #6
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Dont worry about it. Only affects the appearance.
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Old 07-13-2011, 04:33 PM   #7
Shanealan
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Yeah once the rotors are exposed to water they will show a little surface rust.
Even after a car wash you will see it.
Nothing to be worried about.

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Old 07-13-2011, 04:37 PM   #8
5ynd1cat3
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Yeah once the rotors are exposed to water they will show a little surface rust.
Even after a car wash you will see it.
Nothing to be worried about.

Definitely nothing to be worried about but if you're picky (like me!) then there is an option to combat the unsightly appearance of rusted rotors.
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Old 07-13-2011, 04:42 PM   #9
TopazBlu02
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No biggie. Just drive around the block and the rust will be gone.
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Old 07-13-2011, 06:04 PM   #10
M3Nick
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If you don't like rust around those areas like on the "hats", then you are going to have to clean and paint like someone said. Good luck.
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Old 07-13-2011, 06:21 PM   #11
LivesNearCostco
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Some aftermarket rotors are plated or coated on the hats, edges and inside the vanes to reduce rusting in those areas not touched by the pads. I don't know how it works. Bought a set from UUC Motorwerks but haven't installed them yet.
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Old 07-13-2011, 06:22 PM   #12
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Quote:
Originally Posted by ausanada View Post
Hi all, it's me again.

I got my brakes and rotors changed a week ago and they looked good and shiny, but it's been raining over here and the rotors now have a lot of rust on them (I haven't been driving). I drove a few miles but there's still some rust on the rim and the area near the nuts. Do I just use CRC Brakleen and scrub it off?

It rained last night and now the side where it makes contact have rusted again!

See pic!
Don't sweat the small ****. This is nothing.
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Old 07-14-2011, 10:50 AM   #13
OrientBlau
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Rust is so scary to some, they dont even drive their car in the rain...

I know a guy who wont drive his second hand 8 yr old RX300 in the rain. Makes no sense to me.
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Old 07-14-2011, 11:11 AM   #14
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Originally Posted by OrientBlau View Post
Rust is so scary to some, they dont even drive their car in the rain...

I know a guy who wont drive his second hand 8 yr old RX300 in the rain. Makes no sense to me.
I would never again drive an RX300 in any type of inclement or even non-sunny weather. The guy has the right idea, even if his reasoning is to not rust his brakes.
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Old 07-14-2011, 10:55 AM   #15
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mmm rust...I live in Texas and rust is a theme here lmao
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Old 07-14-2011, 11:41 AM   #16
killj0y
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why wouldn't you? I mean I'm sure the car was designed to withstand a little rain... It's not a permanent convertible is it?
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Old 07-14-2011, 12:02 PM   #17
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why wouldn't you? I mean I'm sure the car was designed to withstand a little rain... It's not a permanent convertible is it?
Rx300 is an SUV, and I totaled mine because of buildup in it's ABS sensors causing the ABS to fail. It's actually a known problem, it happens due to snow/ice buildup, mud & dirt, etc.
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Old 07-14-2011, 12:15 PM   #18
killj0y
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why not regularly just clean the abs sensors? Most E46 fanatics have prob had that same problem and cleaned their sensors to clear the brake dsc lights. I'm sure it's even easier on an SUV lol.
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Old 07-14-2011, 12:18 PM   #19
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why not regularly just clean the abs sensors? Most E46 fanatics have prob had that same problem and cleaned their sensors to clear the brake dsc lights. I'm sure it's even easier on an SUV lol.
Because before the accident I was not aware that there was a problem.
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Old 07-14-2011, 12:24 PM   #20
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true, man that sucks! Is there now a recall for that? glad I cleaned mine I'd hate to lose control like that.
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