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  1. #1
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    2013 Madone 5.2 front Brake Problem

    I am unable to spread the front brake to remove the tire on my new 2013 Madone 5.2. These are not Ultegra but the NEW Bontrager aero brakes.

    This is the second time this has happened, The first time the bike shop replaced them at no charge.

    Has this happened to anyone else? If so do you have a solution?

  2. #2
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    I am not familiar with Bontrager aero brakes. Don't they have a quick release on the caliper??
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  3. #3
    'brifter' is a lame word.
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    There is a quick release on the caliper, but how do you have them so tight that you have to open them to get the tire between the pads? The '13 5.2 has wheels w/ rims as wide as the tires. I have that same frame/brakes and use a 25mm front tire and have never even touched the q/r on the brake. Post a photo.
    i work for some bike racers...
    2013 Trek Madone 5.9 w/ '12 SRAM Red
    2010 Cervelo T1 sprint bike
    Ruger 10-22TD
    Smith&Wesson M&P 15-22
    Smith&Wesson M&P 9
    oh, those belong in another forum

  4. #4
    wim
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    First thing, make sure they have been installed as per instructions. Brake pad spacers have to be arranged in a certain way depending on rim width, and the high/low limit screws have to be set to match the levers. Unlikely, but I have seen brakes that were installed and set up with the QR open, rendering it useless.

  5. #5
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    Quote Originally Posted by cxwrench View Post
    There is a quick release on the caliper, but how do you have them so tight that you have to open them to get the tire between the pads? The '13 5.2 has wheels w/ rims as wide as the tires. I have that same frame/brakes and use a 25mm front tire and have never even touched the q/r on the brake. Post a photo.
    Key point. Adjust the brakes so that you can almost pull the lever to the bar with full pressure. This allows you to modulate the brakes most effectively and you are operating the brakes with your full finger strength instead of just having the tips of the fingers on the brake levers. If the brakes have to be pried open to get your wheel off you have either set them up very poorly or they truly are defective. Defective brakes (in this fashion) are a VERY rare occurrence.

  6. #6
    'brifter' is a lame word.
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    Here are a few photos of how i set my brakes up. First, from ahead. You can clearly see all of the pad, that's w/ a 25mm tire. I have never touched the q/r to get the tire between the pads.
    2013 Madone 5.2 front Brake Problem-null_zps4f06a947.jpg

    Then a shot of the pad clearance.
    2013 Madone 5.2 front Brake Problem-null_zpse71f9935.jpg

    This is how far back my lever comes w/ a solid pull. This would be enough to lock up the rear wheel.
    2013 Madone 5.2 front Brake Problem-null_zps1f306ec5.jpg
    i work for some bike racers...
    2013 Trek Madone 5.9 w/ '12 SRAM Red
    2010 Cervelo T1 sprint bike
    Ruger 10-22TD
    Smith&Wesson M&P 15-22
    Smith&Wesson M&P 9
    oh, those belong in another forum

  7. #7
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    Quote Originally Posted by MR_GRUMPY View Post
    I am not familiar with Bontrager aero brakes. Don't they have a quick release on the caliper??
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    Yep they do and they are pretty solid actually..

  8. #8
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    2013 Madone 5.2 front Brake Problem

    If the caliper qr is frozen(happens on Bontrager brakes), squirt some good penetrating lube in there and use tools to cycle the mechanism. I've yet to have one not break free!

  9. #9
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    Problem fixed

    Quote Originally Posted by mpcbike View Post
    If the caliper qr is frozen(happens on Bontrager brakes), squirt some good penetrating lube in there and use tools to cycle the mechanism. I've yet to have one not break free!


    That appear to be the answer and that is what worked. Spoke to the TREK rep about it yesterday as well.

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