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Rusty Discs

beaker Mar 27, 2006

  1. beaker

    beaker Member

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    I've noticed that my brake discs seem to be getting a rusty coating if I leave the car sitting unused for a couple of days or more. It goes away when I use the car the brakes make a horrible noise when I first use them, presumably as the coating is being rubbed off. Is this normal? Is it damaging to the brakes in any way?
     
  2. jdp1962

    jdp1962 Grumpy Old Moderator Staff Member Moderator TFSI Owners Group Team V6 Gold Supporter Team Tornado Audi S4 quattro Black Edition s tronic

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    Every car I've ever had has done that. Wouldn't worry about it
     
  3. Kevint

    Kevint Active Member

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    [ QUOTE ]
    Every car I've ever had has done that. Wouldn't worry about it

    [/ QUOTE ]

    Agreed.

    If it's been a wet day the rust can happen after a few hours.

    Kev.
     
  4. beaker

    beaker Member

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    OK then. I think this happened on my golf as well but its probably a lot more noticable with the s-line wheels.
     
  5. marriedblonde

    marriedblonde Active Member

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    The discs on mine, and all my previous cars, go rusty from the time I start to wash my car to when I rinse it.

    Don't worry, one of those things

    J.
     
  6. oldlaw

    oldlaw Member

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    I recently bought a A3 which was quite badly affected with rust,not on the actually part of the disc where the pads touch.but on the part where it bows out and connects to the wheel. I took it to Audi Perth where it looks like they have just resprayed it. It now looks like the rust is starting to come thru again. Anybody had anything similar? It`s on a 05 plate. /ubbthreads/images/graemlins/cry.gif
     
  7. SMB

    SMB New Member

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    disks suffer a lot of heat from braking and any paint applied at day one soon wears off. Most disks these days are not treated to stop rust, as the braking action wears any coating off most of the disk, you can buy special disks with a special coating but you pay a lot more for them.
     
  8. oldlaw

    oldlaw Member

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    Looks like this
    [​IMG]
     
  9. d3fy

    d3fy Active Member

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    same on my 5 month old car. A design feature of Audi to prevent rusting when standing only not for inlife. Get your self a tub of hammerite and give them a lick of paint and do the calipers at the same time, thats what I will be doing when the weather smartens up
     
  10. wilko

    wilko Top Gear

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    I'll be doing the same as well when it warms up cos mine are going much the same. Will hammerite do the job? What about the colour match? The colour isn't too disimilar to the alloys. Anyone done this before?
     
  11. d3fy

    d3fy Active Member

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    I have painted Calipers before on the last two cars, first time with Caliper paint, second car with Hammerite. The Hammerite was the best and lasted without any problems the two years I had the car
     
  12. imported_hookie

    imported_hookie Guest

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    Discs get very hot, a high temperature paint is more advisable, if you remove all rust first the coating will last alot longer.

    Oh and try and avoid spraying the contact surface!
     
  13. wilko

    wilko Top Gear

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    Does anyone have any pics what what parts of the caliper you can and can't paint? Please post um if you have!!
     
  14. imported_hookie

    imported_hookie Guest

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    Avoid the pistons, seals and the nipple!
     
  15. d3fy

    d3fy Active Member

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    anything rubber stay away from, anything metal paint, so the fronts of the calipers, the sides, the hubs
     
  16. cdb2

    cdb2 Member

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    You can get special heat resistant bright silver paint at Halfords, used it on a prev car. Think it was safe up to 1000 degrees celcius.
     
  17. oldlaw

    oldlaw Member

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    Ok guys looks like a trip to halfrauds for some hammerite when the time comes. /ubbthreads/images/graemlins/woohoo.gif I just love me smilies.
     
  18. d3fy

    d3fy Active Member

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    I really would not bother with the Caliper paint and just go for hammerite, but go with what you are comfortable with
     
  19. marriedblonde

    marriedblonde Active Member

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    I've painted loads og brake calipers, carries, engines etc all with hammerite and never had a problem with the paint burning Best bit is it's quick, quick drying and looks fine /ubbthreads/images/graemlins/laugh.gif
     
  20. steeve

    steeve Well-Known Member TeamMisano Team Ibis Audi S3

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    I generally have always used caliper paint, but I know a few who always use Hammerite and they have never had any problems. I did paint the hubs with smoothrite though and they look pretty good. Better than rust.
     

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