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Thread: Rear Brakes Wearing Poorly, Noise

  1. #1
    Registered Member


    Join Date
    Jul 2009
    Posts
    16

    Rear Brakes Wearing Poorly, Noise

    My 2018 Mazda 3 5 door is having some rear brake problems and I was wondering if anyone else here had a similar issue.

    Since almost new (about 11 months ago), the rear brakes did not show even wear on the rotors. Not even a smaller stripe of worn rotor in the middle, just a bunch of lines - nothing even. Starting about 6 months ago, they also make a rotational scratching sound that is audible at lower speeds.

    My previous 3 - a 2005 - also wore the rear rotors unevenly. Is this a known problem?

    Getting to the dealer is a hassle, so if it's a basic re-greasing of the caliper slides, I'm inclined to just deal with it myself.

    Any other ideas?

  2. #2
    Registered Member concept's Avatar

    2014 Mazda3 S GT auto, 2008 MX5 6-speed

    Join Date
    Mar 2009
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    San Diego
    Posts
    1,639
    My coworker's 2018 Audi had circular grooves in its rotors. It seems to be more likely if the vehicle traverses dry, sandy roads, as grains of sand can easily score brake rotors. Can you post a photo?
    2014 3S GT, Deep Crystal Blue, Eibach Pro-Kit, Enkei PF01s, Koni Sports, Pirelli P ZERO ALL SEASON PLUS tires, 225/45/18
    2008 MX-5 Touring (Mazdaspeed CAI, HIDs, Progress/Koni Sports/Racing Beat sways, SST Magnaflow muffler and tips)

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