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Thread: Size matters

  1. #1
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    Size matters

    I would like to know when you buy a new bike, why it comes with a larger front disc than the rear. I thought the larger the brakes the better?

  2. #2
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    The rear has less overall stopping power than the rear, as it tends to break traction. The larger rotor on the front balances out the point where traction breaks.
    Rimmer - "There's an old human saying - if you talk garbage, expect pain"

  3. #3
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    The rear is limited with traction, thus large rotors are usable there only for heat managementon long downhills / heavy riders.

    Front however can put much more traction during braking, and consequentailly, can take a bigger rotor.

    It is a common practice to use a big front and small back - for example I use 203/160 on my AM bike.

  4. #4
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    Are serious downhill guys running 203 front and rear?

  5. #5
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    Front vs. Rear Brake Test

    Take any bike with front and rear brakes. Stand next to the bike holding the handlebars with your hands on the brake levers.
    -Squeeze the front brake and push the bike forward and than backwards.
    (Notice how the bike skids in when pushed backwards).
    -Squeeze the rear brake and push the bike forwards and backwards.
    Notice how the bike skids going forwards and does a wheelie going backwards.

    Rear brakes are useful for a few things, but front brakes stop the bike.

    Rear brakes give you low brake power which is useful when:
    landing a jump, altering with your front brake to minimize overheating, in case of front brake failure.

    If you wear your rear brake pads out before your front brakes, your not a very knowledgeable rider and your skill levels are weak at best.

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