Why are my brake discs rusty?

Parrots · 06-02-2013, 09:57 PM

Hi.

I washed my wheels last week but the car has not been driven since.

Before i washed the alloys my discs were all nice and shiny but looking at them today they are all brown and look like they have rusted all over.
Any ideas or know how i can clean them and what causes this.

Thanks in advance.

spdy330 · 06-02-2013, 10:03 PM

They all so this, just drive it and it will come right off.

Parrots · 06-02-2013, 10:06 PM

Quote:

Originally Posted by spdy330

They all so this, just drive it and it will come right off.

Thanks was just wondering as i have not seen this before.

Majin Buu · 06-02-2013, 10:15 PM

steel rotors usually develop a thin layer of rust if not driven for a few days especially after exposure to moisture. just drive normally and after a few brake applications all the rust will be wiped off.

Parrots · 06-02-2013, 10:16 PM

Quote:

Originally Posted by Majin Buu

steel rotors usually develop a thin layer of rust if not driven for a few days especially after exposure to moisture. just drive normally and after a few brake applications all the rust will be wiped off.

Thank you.

Vic311 · 06-02-2013, 10:18 PM

Quote:

Originally Posted by Majin Buu

steel rotors usually develop a thin layer of rust if not driven for a few days especially after exposure to moisture. just drive normally and after a few brake applications all the rust will be wiped off.

Iron, specifically nodular iron.

spdy330 · 06-02-2013, 11:08 PM

Everytime I wash my car I need to take it for a drive around the block as my pads will lock to the rotors making it hard to break free when I drive it later. This is with a Brembo BBK. I am in the habit of taking it around the block after each wash and no rust or locking of rotors to pads.

Quote:

Originally Posted by Parrots

Thanks was just wondering as i have not seen this before.

glockperfect · 06-02-2013, 11:14 PM

Quote:

Originally Posted by spdy330

Everytime I wash my car I need to take it for a drive around the block as my pads will lock to the rotors making it hard to break free when I drive it later. This is with a Brembo BBK. I am in the habit of taking it around the block after each wash and no rust or locking of rotors to pads.

Quote:

Originally Posted by Parrots

Thanks was just wondering as i have not seen this before.

This is what I do as well.

Parrots · 06-02-2013, 11:22 PM

Quote:

Originally Posted by spdy330

Everytime I wash my car I need to take it for a drive around the block as my pads will lock to the rotors making it hard to break free when I drive it later. This is with a Brembo BBK. I am in the habit of taking it around the block after each wash and no rust or locking of rotors to pads.

Thanks for the advice and i will be sure to do that in future.

I dont have my licence yet as i have my driving test later today so could not drive it after cleaning the alloys.

spdy330 · 06-02-2013, 11:25 PM

Good luck on your drivers test. Nice first car!

Quote:

Originally Posted by Parrots

Thanks for the advice and i will be sure to do that in future.

I dont have my licence yet as i have my driving test later today so could not drive it after cleaning the alloys.

Parrots · 06-02-2013, 11:28 PM

Quote:

Originally Posted by spdy330

Good luck on your drivers test. Nice first car!

Thank you.

FVM3 · 06-03-2013, 01:53 AM

thats normal

Parrots · 06-03-2013, 03:22 PM

Passed and took the M3 out after getting it insured and the discs cleaned right off so thanks to those that helped. This car is bloody fast

deletedelete · 06-03-2013, 03:41 PM

Congrats on a great first car! And you can't have a e92 convertible, it's a e93. Not sure if troll...

Majin Buu · 06-03-2013, 05:20 PM

Quote:

Originally Posted by Parrots

Passed and took the M3 out after getting it insured and the discs cleaned right off so thanks to those that helped. This car is bloody fast

Just be VERY careful. Not sure how much driving experience you have, but the M3 is quite powerful and rear wheel drive. It can be a handful for new drivers. And always keep the traction control on until your skill level goes up. And consider going to track days and getting professional instruction.

I would have recommended a Honda S2000 or Toyota GT86 as far better cars than the E92 M3 for a novice driver, but whatever. The deal is done. Enjoy the car, but have common sense, and make sure you keep your speed below your talent level.

Da Hapa · 06-03-2013, 05:59 PM

Quote:

Originally Posted by Majin Buu

Just be VERY careful. Not sure how much driving experience you have, but the M3 is quite powerful and rear wheel drive. It can be a handful for new drivers. And always keep the traction control on until your skill level goes up. And consider going to track days and getting professional instruction.

At the risk of sounding like my Dad... EXCELLENT advice.

The truth is that IMO, all but very, very few of us on this board couldn't benefit from additional HPDE or track time. But that's especially true if you're just learning to drive and lucky enough to be learning behind the wheel of an M3.

Congrat's and many happy, safe miles.

Parrots · 06-04-2013, 06:50 AM

Quote:

Originally Posted by Prowess Symphony

Congrats on a great first car! And you can't have a e92 convertible, it's a e93. Not sure if troll...

Will fix that up later. Just a typo on my part.

Not a troll and my instructor posted a picture on his facebook page with me in my M3 after i passed yesterday. https://www.facebook.com/pages/Keane...06017179545528

N1COM3 · 06-04-2013, 12:33 PM

Lol, I wish I had a M3 when I first got my license. I had to work my butt off for the one that I have now. I guess you cant hide money. Ha

06-02-2013, 09:57 PM	#1
Parrots Private First Class 7 Rep 116 Posts Drives: M3 E93 Convertible Join Date: May 2013 Location: London iTrader: (0)	Why are my brake discs rusty? Hi. I washed my wheels last week but the car has not been driven since. Before i washed the alloys my discs were all nice and shiny but looking at them today they are all brown and look like they have rusted all over. Any ideas or know how i can clean them and what causes this. Thanks in advance. Last edited by Parrots; 06-02-2013 at 10:45 PM..
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06-02-2013, 10:03 PM	#2
spdy330 Major General 530 Rep 6,149 Posts Drives: 05 Tundra, 15 FIT, 17 CRV Join Date: Dec 2009 Location: Chino Hills, CA iTrader: (163)	They all so this, just drive it and it will come right off. __________________ If you will be purchasing ANY AT&T services online or in store could you mention that you were referred by me? My Employee Referral ID is eo4489. This would be a great help and it costs you nothing, thank you!
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06-02-2013, 10:15 PM	#4
Majin Buu Banned 15 Rep 324 Posts Drives: M3 Join Date: Apr 2013 Location: Canada iTrader: (0)	steel rotors usually develop a thin layer of rust if not driven for a few days especially after exposure to moisture. just drive normally and after a few brake applications all the rust will be wiped off.
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06-03-2013, 01:53 AM	#12
FVM3 Major General 273 Rep 5,751 Posts Drives: e92 m3, f30 328i Join Date: Sep 2010 Location: Los Angeles iTrader: (2)	thats normal
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06-03-2013, 03:22 PM	#13
Parrots Private First Class 7 Rep 116 Posts Drives: M3 E93 Convertible Join Date: May 2013 Location: London iTrader: (0)	Passed and took the M3 out after getting it insured and the discs cleaned right off so thanks to those that helped. This car is bloody fast
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06-03-2013, 03:41 PM	#14
deletedelete Major General 361 Rep 5,873 Posts Drives: m Join Date: Nov 2008 Location: usa iTrader: (14) Garage List 2013 e92 M3 [0.00] 2011 e93 M3 (sold) [0.00] 2009 335xi (sold) [0.00]	Congrats on a great first car! And you can't have a e92 convertible, it's a e93. Not sure if troll... __________________ ---> Click For xi/xDrive Suspension Compatibility List <---
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06-04-2013, 12:33 PM	#18
N1COM3 Private First Class 6 Rep 112 Posts Drives: LMB E92 Join Date: Sep 2012 Location: Hampton Roads, VA iTrader: (0)	Lol, I wish I had a M3 when I first got my license. I had to work my butt off for the one that I have now. I guess you cant hide money. Ha
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