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  1. #1
    Bike Commuter
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    Advantages of Machined Brake Tracks?

    What are the advantages and disadvantages of machined brake tracks? I'm just a humble commuter, not a racer or anything, and I'm wondering if its worth the extra money. I've search google but to no avail.

  2. #2
    Senior Member Shimagnolo's Avatar
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    + Prevents brakes on a new bike from squealing.

    - Unnecessarily takes metal off of the sides of the rim where the brakes will be wearing off metal anyway.

    Bottom line: Marketing

    Some reading on the topic: http://www.sheldonbrown.com/brandt/machined-rims.html
    Last edited by Shimagnolo; 06-15-10 at 09:34 AM.

  3. #3
    Senior Member DieselDan's Avatar
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    Quote Originally Posted by Shimagnolo View Post
    + Prevents brakes on a new bike from squealing.

    - Unnecessarily takes metal off of the sides of the rim where the brakes will be wearing off metal anyway.

    Bottom line: Marketing
    A little bit of fail there for your reading pleasure.
    Bikes use brakes to stop.

    If your bike has breaks, don't ride it.

  4. #4
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    The machined rims do hold up to tolerance better than non-machined ones. I true my wheels to +/- 0.001" when new. The machined rim has more exposed surface area for braking vs. a smooth surface. Manufacturers usually add a little more material to compensate for final machining.

  5. #5
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by plutonium83 View Post
    What are the advantages and disadvantages of machined brake tracks? I'm just a humble commuter, not a racer or anything, and I'm wondering if its worth the extra money. I've search google but to no avail.
    Machined rims are smoother than pinned rims. All pinned rims, i.e. not machined, I've ever used have a slight annoying bump at the joint. Even after miles and miles of use along with removal of lots of sidewall material (braking wears the surface), the bump is still there.
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