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Thread: Cracked rotors?

  1. #1
    Senior Member Three Rings MME1122's Avatar
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    Cracked rotors?

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    Question, is this what rotors look like when they crack? I've never had one crack on me before. Both rears are like this.




  2. #2
    Veteran Member Four Rings Sgibb16's Avatar
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    Certainly looks like a crack to me. Can you catch a fingernail on it?
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    Veteran Member Four Rings wkhanna's Avatar
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    do you use your parking brake often?
    Billy

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  4. #4
    Senior Member Three Rings MME1122's Avatar
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    No it's pretty smooth. I thought it was just dirt or pad material but I couldn't scrape it off. I didn't try any sandpaper though.
    I have a set of adams rotors on order that should arrive this week, so this was going to be this weekends project anyway. Good timing I guess

  5. #5
    Senior Member Three Rings MME1122's Avatar
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    Quote Originally Posted by wkhanna View Post
    do you use your parking brake often?
    Every time I park the car since I have the manual. It sets itself automatically anyway doesn't it?

  6. #6
    Registered User Four Rings Skyler@Achtuning's Avatar
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    To me it looks more like an imprint of a rust ring around the outside perimeter of the pad as the vehicle was parked. Some hard braking like a bed-in process would likely make this go away. A cracked rotor looks more like a lightning bolt and not a straight line.

  7. #7
    Senior Member Three Rings MME1122's Avatar
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    Quote Originally Posted by Skyler@Achtuning View Post
    To me it looks more like an imprint of a rust ring around the outside perimeter of the pad as the vehicle was parked. Some hard braking like a bed-in process would likely make this go away. A cracked rotor looks more like a lightning bolt and not a straight line.
    That makes sense too. I did a short drive around town but no hard braking and it was still there. I'll do some heavier braking just out of curiosity. New rotors are going on anyway lol.

  8. #8
    Veteran Member Four Rings wkhanna's Avatar
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    Quote Originally Posted by Skyler@Achtuning View Post
    To me it looks more like an imprint of a rust ring around the outside perimeter of the pad as the vehicle was parked. ........
    i was thinking the same thing.......
    Billy

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  9. #9
    Veteran Member Four Rings JamesRS5's Avatar
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    Thats not a crack!

    Its a mark left by your rear pads. Give your brake rotor surface a clean up by doing a few heavy braking sets (do not lock up, do not allow the ABS to cut in) and it will clean off.

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