Tool Q&A

Tool Q&A: Prevent Brake Comebacks

  • Innovative Products of America

    Testing a brake caliper with a Disc Brake System Analyzer from Innovative Products of America requires removing the caliper and putting the gauge in between the brake pads. For more information on...

  • Craig Truglia

    Cutting a rotor with a Pro-Cut brake lathe. The cut marks appear deeper on some parts of the rotor than others. This is because this rotor is warped by more than 0.005". For more information on the...

  • Craig Truglia

    Bleeding the brakes with a brake flush machine. Notice that a battery is not directly on the floor. This is in accordance with EPA regulations in order to prevent fines. For more information on the...

  • Craig Truglia

    A dial indicator is the only tool, other than a brake lathe, that can reveal how warped a rotor is.

  • Craig Truglia

    A larger than average parts washer makes cleaning vital brake components a breeze.

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Q: How can we find out if the front or rear rotors are warped? A: There are two methods and both are imperfect, because they don’t make a scan tool for brake rotors! The first method is to test drive the vehicle and feel the shaking when braking. If the seat or pedal shakes first, you likely have warped rear rotors. Now, when the steering wheel shakes, the front brakes probably need the work. This method is imperfect for several reasons. First, you might feel shaking in both or the...
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