Painting brake discs??

Discussion in 'Wheels, Tyres, Brakes & Suspension' started by R2D2, Oct 10, 2011.

  1. R2D2

    R2D2 MB Club Veteran

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    This might sound mad but I'm getting my brakes changed this week and I hate the way the "hub" bit of the discs and also the ventilated edge rust over time. Is there any merit to painting the sides of the hub (the bit you still see when fitted) and the ventilated edge. Obviously I'd have to use high temperature paint which I happen to have a tin of in the garage.....any thoughts welcome.
     
  2. Troon

    Troon Hardcore MB Enthusiast

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    You'd be slightly reducing the disc's abiility to radiate its heat away. Can't imagine that'd make any real difference though - just don't paint the middle of the vented "sandwich".
     
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  3. brucemillar

    brucemillar MB Club Veteran

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    I do this on my C55 with a brush on primer and brush on smooth Hammerite. With very open wheels it just cleans everything up nicely. Anyway luminous pink is a good colour.
     
  4. OP
    OP
    R2D2

    R2D2 MB Club Veteran

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    Excellent -Pink it is then!
     
  5. Mike Walker

    Mike Walker Hardcore MB Enthusiast

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  6. OP
    OP
    R2D2

    R2D2 MB Club Veteran

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    New tyres going on soon, refurbed AMGs, new cross drilled brakes- can't have rust appearing anywhere!!:)
     
  7. Alps

    Alps MB Club Veteran

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    R2,

    I did the same, satin black hammerite on the outer vents and the hub part, dont worry about being too exact as any overpainting gets cleaned away by the pads, try and keep roughly to the unworn area tho.
     
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  8. flango

    flango MB Club Veteran

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    As post 2 you should never paint the hub or edges as it affects heat dissipation and braking performance and is particularly more noticeable on high performance cars and it can glaze the pads.
     
  9. wemorgan

    wemorgan MB Club Veteran

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    Meyle sell brake discs that are zinc coated to stop this from happening.
     
  10. whitenemesis

    whitenemesis MB Club Veteran

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    R2 if you use genuine MB discs they come with a grey protective coating. Do not remove this, let the pads clear the braking surface ( which they do within the first couple of applications) and the coating will remain on the hub and rim. Mine haven't rusted.
     
    Last edited: Oct 10, 2011
  11. LTD

    LTD MB Club Veteran

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    Yep, one of THOSE !!!
    Imagine worrying about rust on the brake discs of a Mercedes ...

    What about the rest of the car ?
     
  12. OP
    OP
    R2D2

    R2D2 MB Club Veteran

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    I am fortunate i have no rust at all.
     
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  13. corned

    corned Hardcore MB Enthusiast

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    Ah - so YOU got the Friday afternoon car then...

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  14. clever dicky

    clever dicky Hardcore MB Enthusiast

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    I did the same to mine when I changed my front discs :)
    But I get so much brake dust anyway its hard to see. But its not a problem, i 'dripped' loads of paint into the the channels between the disc plates, and made sure it coated as much as poss. without losing it through the holes.

    Only time I'd say you could do it is when they're new. But make sure it heat paint for exhausts. As brakes do get hot !
     
  15. DRBC43AMG

    DRBC43AMG Hardcore MB Enthusiast

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    Heat paint on the hubs only not on the edge and vents. It does make the look cleaner, but then you need wheels with spokes you can see through, otherwise you can't see anything apart from removing the wheel, but I doubt you are going to do that in the pub parking just to show off :D
     
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  16. Chrishazle

    Chrishazle Hardcore MB Enthusiast

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    The Zimmerman discs for my 968 coupe came with a full rust proof grey coating. As mentioned above, first application of the brakes took the coating off the contact area, the remainder stayed grey and did not rust.
     
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  17. BTB 500

    BTB 500 MB Club Veteran

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    I did the hub part on my SL disks 3 years ago when I changed to the AMG wheels as it was clearly visible and looked bad. I gave them a single coat of silver Hammerite smooth - agree the slightly reduced heat dissipation could be an issue on a track car with repeated heavy braking, but not for the way I use the SL. It's only a band maybe 1" wide, and the rest of hub portion is bolted to a huge AMG 18" heat sink ;)
     
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  18. thefast1

    thefast1 Active Member

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    Did mine with silver caliper paint that I had left over from an earlier project, good to know there are others out there that like the minor details.
     
  19. Mike Walker

    Mike Walker Hardcore MB Enthusiast

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    tempting fate old chap!:eek:
     
  20. Superspec

    Superspec Hardcore MB Enthusiast

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    It's fine to paint them. Plenty of discs start out fully coated, the pads wear off the coating on the disc surface within a few miles leaving the rest of the disc looking lovely. Painting the hub is fine too, the only bit I'd be careful with is the mating surface where the hub and wheel meet, I wouldn't paint that. I read somewhere that the paint can burn off/wear and can cause the wheel bolts to come loose since the thickness of the paint has effectively turned into fresh air.
     

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