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Brake Disc Rust

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by stoakseya4, Jul 21, 2009.

  1. stoakseya4

    stoakseya4 Active Member

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    I may have found some GMBH (drilled) discs, cheap, but they have some light surface rust.

    How do you remove rust from the discs without damaging them?

    Cheers awfully...


    :greyrs4:
     
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  3. quattrojames

    quattrojames Moderator
    Staff Member Moderator Audi A6 Audi Avant Owner Group

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    Send them to me in the boot of your car, I will return them a week later fitted and all shiney. And probably glowing :)
     
  4. stoakseya4

    stoakseya4 Active Member

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    :applaus: :3sadwalk:
     
  5. Johnny Bravo

    Johnny Bravo 6+1 Gears
    Bronze Supporter Audi A3

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    And thinner...

    stoakseya4 I don't think you should worry about the rust as long as it is only at the surface. It will come off after you break a few times.
     
  6. AndymacA4

    AndymacA4 Member

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    Agreed, the surface rust is normal and will come off with a few brake applications. Look out for any pitting or deeper rust, this would be more of a problem. If it looks like brown dust on the surface your fine!
     
  7. Johnny Bravo

    Johnny Bravo 6+1 Gears
    Bronze Supporter Audi A3

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    If you really want to clean the rust before fitting them I think you can use a high granulation sand paper and gently rub it off. I do not advise on using any sort of chemicals, derusting sprays or such because they may leave a thin film on the surface that will affect breaking performances. You may end up in a ditch or rear-end someone.
     
  8. quattrojames

    quattrojames Moderator
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    I would use a fine wet and dry paper with water, 800 or 1200 to clean the parts the brake pads don't touch :)
     
  9. no_idea

    no_idea Member

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    How about a green or burgundy Scotch Brite pad or even a saucepan scourer.
     

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