Brake Rotor Size Question!?- Mtbr.com
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  1. #1
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    Brake Rotor Size Question!?

    Hey Board - I am working on my ss project (Kona Cinder Cone) and am going 650B up front with a Surly fork. I'll be going with an XT hub and XT Disc Brake. What size rotor would y'all recommend? 6"? 7"? 8"? My riding will be XC - no crazy downhills...just basic XC....since I live in HOUSTON!! Thanks, Mike

  2. #2
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    183 front and 160 rear should make you happy.good power and modulation .bigger wheels need bigger brakes.
    trlridr

  3. #3
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    183 front and 160 rear should make you happy.good power and modulation .bigger wheels need bigger brakes.
    trlridr

  4. #4
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    Cool...will be going with the 7" rotor !

  5. #5
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    Quote Originally Posted by Mike A.
    Cool...will be going with the 7" rotor !
    Nobody makes 6 or 7-inch rotors.

    160mm front and rear would be just fine. Nothing wrong with using a 180, 183 or 185mm (depending on the brake brand) on the front either.
    mtbtires.com
    The trouble with common sense is it is no longer common

  6. #6
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    mike i have a turner 5spot and run 203 an 183 or 203 an160 hope rotors depending on where im riding, andwhen comparing 26 in vs 29 in wheels think about the engineering aspect bigger wheel takes more rotor to slow it down so a 183 up front will be good,160 will be ok in back .only if you do alot of long decents will you need anything bigger and then only maybe.
    trlridr

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