1. The most important thing about buying a new bike is to make sure it fits. The only way you'll know if the bike is right for you is to size up the bike and make sure that the bike's geometry matches your body's geometry. Ask questions and do some research.
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  1. #1
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    New question here. Going from 160 to 180mm rotors.Please HELP

    Hi everybody,
    I currently have tektro Io mechanical disk brakes with both 160mm front and rear rotors.I am doing a bit harder riding so my 160s heat up fast.I would like to know if i could put 180mm on the front and a new 160mm at the back without buying anything extra(besides rotors).Could these fit:front:Shimano SM-RT56 180mm,rear:SM-RT56 160mm​.Thanks

  2. #2
    rebmem rbtm
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    For future reference: http://forums.mtbr.com/brake-time/

    You'll need the correct 180mm adapter on the front.

    Front IS 180mm: http://www.bikeman.com/BR8913.html
    Front PM 180mm: http://www.bikeman.com/BR8593.html

    Those rotors you listed should be fine .

  3. #3
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    Thanks very mutch will buy adapter.

  4. #4
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    Depending on how much you plan on spending, you might want to save up for a few months and buy a whole new set of brakes. SLX taken off from new bikes are pretty common now. Could be only $200 or cheaper.

    You could keep the old brakes for when you sell the bike. May be something to ponder.

  5. #5
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    Quote Originally Posted by AntonioLekic View Post
    Hi everybody,
    I currently have tektro Io mechanical disk brakes with both 160mm front and rear rotors.I am doing a bit harder riding so my 160s heat up fast.I would like to know if i could put 180mm on the front and a new 160mm at the back without buying anything extra(besides rotors).Could these fit:front:Shimano SM-RT56 180mm,rear:SM-RT56 160mm​.Thanks
    A couple things you'll want to check into -

    Make sure your hubs have 6-bolt mounting pattern for the rotors rather than Shimano centerlock style (you probably do).

    Those rotors say 'for resin brake pads only'. Not sure why this is, but you should either run resin pads or at least find out why they recommend them before ignoring the recommendation. (I found resin pads can be kind of grabby myself.)
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  6. #6
    rebmem rbtm
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    Quote Originally Posted by slapheadmofo View Post
    Those rotors say 'for resin brake pads only'.
    Good point, I forgot that some Shimano rotors are made for resin only pads.

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