Rotor rust?
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 13 of 13
Like Tree2Likes
  • 2 Post By FLTRI
  • 2 Post By CoppeR
2009-2014 Cadillac CTS-V General Discussion Discussion, Rotor rust? in Cadillac CTS-V Series Forum - 2009-2014; So I bought a gently used 2012 earlier this week, and noticed that the front brakes (first pic below) seem ...
  1. #1
    Has No Left's Avatar
    Has No Left is offline Cadillac Owners Member
    Automobile(s): 2012 CTS-V Sedan
    Join Date
    Jul 2012
    Location
    PA
    Posts
    49

    Rotor rust?

    So I bought a gently used 2012 earlier this week, and noticed that the front brakes (first pic below) seem to have a black plastic cover over the base of the brake rotor - right where it meets the rim/lugs. It's screwed down by several screws around the diameter.

    The rears (second pic below) don't have this plastic cover, and you can see the exposed part of the rotor (not the braking surface) has some surface rust from being exposed. Is my V just missing the black plastic cover in the rear, or is this normal?

    ImageUploadedByTapatalk1352853120.875525.jpg

    ImageUploadedByTapatalk1352853136.393956.jpg

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    kwilson is offline Cadillac Owners Member
    Automobile(s): 2013 CTS-V Coupe
    Join Date
    Aug 2012
    Location
    Edmond, OK
    Age
    36
    Posts
    43
    The fronts are two piece rotors. Don't have the same problem on the back but mine doesn't get out in the rain. I guess you can call me a fair weather driver

  4. #3
    M5eater's Avatar
    M5eater is offline Cadillac Owners Connoisseur
    Automobile(s): ATS 2.0T RWD FE3
    Join Date
    May 2011
    Location
    Suffolk, VA
    Age
    26
    Posts
    4,525

    Re: Rotor rust?

    the 'black cover' is anodized aluminum. Instead of an iron center (like in the rear) aluminum is used for the non-contact surface area of the rotor to reduce mass.

    Since our rotors are not zinc coated, rust is normal.

    Fortunately, the rears are a common part. You can even pickup a set of coated rear rotors from napa. As for the front not rusting, honestly it would surprise me if they 2 piece brembo's were coated.

  5. #4
    kwilson is offline Cadillac Owners Member
    Automobile(s): 2013 CTS-V Coupe
    Join Date
    Aug 2012
    Location
    Edmond, OK
    Age
    36
    Posts
    43
    Quote Originally Posted by M5eater
    the 'black cover' is anodized aluminum. Instead of an iron center (like in the rear) aluminum is used for the non-contact surface area of the rotor to reduce mass.

    Since our rotors are not zinc coated, rust is normal.

    Fortunately, the rears are a common part. You can even pickup a set of coated rear rotors from napa. As for the front not rusting, honestly it would surprise me if they 2 piece brembo's were coated.
    That's a far better explanation!!!

  6. #5
    Has No Left's Avatar
    Has No Left is offline Cadillac Owners Member
    Automobile(s): 2012 CTS-V Sedan
    Join Date
    Jul 2012
    Location
    PA
    Posts
    49

    Re: Rotor rust?

    Thanks! How much do the coated rear rotors cost?

  7. #6
    M5eater's Avatar
    M5eater is offline Cadillac Owners Connoisseur
    Automobile(s): ATS 2.0T RWD FE3
    Join Date
    May 2011
    Location
    Suffolk, VA
    Age
    26
    Posts
    4,525

    Re: Rotor rust?

    Quote Originally Posted by Has No Left View Post
    Thanks! How much do the coated rear rotors cost?
    http://www.napaonline.com/Catalog/Ca...712_0343376507

    not all that much, depending on brand and type.

  8. #7
    FLTRI's Avatar
    FLTRI is offline Cadillac Owners Enthusiast
    Automobile(s): 2011 V-Wagon & 2012 SRX Premium
    Join Date
    Jul 2011
    Location
    Las Vegas, NV
    Age
    50
    Posts
    826

    Re: Rotor rust?

    Or, you can pull the rear wheel, remove what rust you can, and shoot them with high temp black paint. A year and 9K later mine still look great...


    Tedboss1 and Tedboss1 like this.

  9. #8
    Has No Left's Avatar
    Has No Left is offline Cadillac Owners Member
    Automobile(s): 2012 CTS-V Sedan
    Join Date
    Jul 2012
    Location
    PA
    Posts
    49
    Quote Originally Posted by FLTRI View Post
    Or, you can pull the rear wheel, remove what rust you can, and shoot them with high temp black paint. A year and 9K later mine still look great...


    That is what I'm thinking. What process did you use to remove the rust?

  10. #9
    pat2t2f's Avatar
    pat2t2f is offline Cadillac Owners Fanatic
    Join Date
    Aug 2012
    Posts
    498
    When you drive the car, won't the brake pads remove the rust?

  11. #10
    FLTRI's Avatar
    FLTRI is offline Cadillac Owners Enthusiast
    Automobile(s): 2011 V-Wagon & 2012 SRX Premium
    Join Date
    Jul 2011
    Location
    Las Vegas, NV
    Age
    50
    Posts
    826

    Re: Rotor rust?

    Quote Originally Posted by Has No Left View Post
    That is what I'm thinking. What process did you use to remove the rust?
    Wire brush and elbow grease. Hit them with metal primer, then the paint. I masked off the caliper and and studs and did it on the car. I figured when it started to flake off, I'd pull the rotor, do a real good job of clean up, and do it right. So far my 1/2 hour quick job has yet to fail...

  12. #11
    Has No Left's Avatar
    Has No Left is offline Cadillac Owners Member
    Automobile(s): 2012 CTS-V Sedan
    Join Date
    Jul 2012
    Location
    PA
    Posts
    49
    Quote Originally Posted by FLTRI View Post
    Wire brush and elbow grease. Hit them with metal primer, then the paint. I masked off the caliper and and studs and did it on the car. I figured when it started to flake off, I'd pull the rotor, do a real good job of clean up, and do it right. So far my 1/2 hour quick job has yet to fail...
    Thanks! Did you just any type of special masking tape? Any concern of the masking leaving residue on the rotor face (sorry if that is a newb question).

  13. #12
    FLTRI's Avatar
    FLTRI is offline Cadillac Owners Enthusiast
    Automobile(s): 2011 V-Wagon & 2012 SRX Premium
    Join Date
    Jul 2011
    Location
    Las Vegas, NV
    Age
    50
    Posts
    826

    Re: Rotor rust?

    No, I had some blue 3M painters tape laying around, so I used it. It doesn't leave any residue. I masked the rotor face, as well as the hat where it meets the wheel. I got a tiny bit of paint on the rotor face where my masking wasn't perfect, but it came right off first time I put on the brakes... ;0)

    I took the cell phone pic specifically for this thread, my wheels are pretty dirty right now. A little more elbow grease with some soap and water, and they clean up really nice...

  14. #13
    CoppeR's Avatar
    CoppeR is offline Cadillac Owners Fanatic
    Automobile(s): '13 BD Coupe
    Join Date
    Nov 2011
    Location
    Chicago
    Posts
    213

    Re: Rotor rust?

    Quote Originally Posted by pat2t2f View Post
    When you drive the car, won't the brake pads remove the rust?
    The rust is on the rotor hat not the surface that the pad touches. +1 on just painting the hat. Did that on several cars and holds up great.
    Tedboss1 and Tedboss1 like this.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting