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  1. #1
    Super Clyde
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    Is bigger always better?

    I think I'm going to upgrade to Avid BB7 Discs from my Deore LX V Brakes. My question is pretty simple, is bigger better? I looked at Jenson, and they have 180mm and 160mm available. At 355lbs, would I be better off with the 180mm set on the front? I'm only riding roads right now, though they are pretty hilly, but would like to get back into riding some single track once I lose some weight and get into better shape. What say you?

  2. #2
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    I doubt seriously any mechanical disc brake is much better than LX V brake

  3. #3
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    If you have any descents lasting more than a few minutes, I'm thinking you'll want to go as big as you can, especially up front. I'm currently weighing in around 270, and wouldn't want anything smaller than 200mm rotors on the front hub and 180 on the rear. The cost difference isn't significant, if you're upgrading. With braking, I think it's better to have too much than not enough.
    Justin
    Salt Lake City
    2012 Specialized Stumpjumper FSR Comp 29
    2006 Specialized Allez Expert Double

  4. #4
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    The Avid BB7's are great brakes......strong with modulation. I had a set back when they were relatively new on the market and I loved them. Compared with V's they were a MASSIVE upgrade, and I'd come from the best V's with ceramic coated rims too.

    +1 on the biggest you can fit
    Rimmer - "There's an old human saying - if you talk garbage, expect pain"

  5. #5
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    I used Avid BB7's for about 5 years...loved them. Definitely a substantial upgrade to V brakes. But, they really are not as effective or as quiet as a reasonably good hydraulic set. Bigger is better. As mentioned, at your weight 200F/180R might be a good call.

  6. #6
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    While I generally like the feel of 160mm rotors front and rear, I found that my BB7s felt and worked the best with 185/160mm (f/r) rotors. I've never had brake fade with any rotor or brake setup, so I just go by brake feel and personal preference. On the other hand, I weight over 200lbs less that you, so you may have a completely different set of requirements. I ride with a couple guys who are in the 200-220 lb range, and they do quite well with mid-level Elixirs (5, 7, R, etc) and 160mm rotors.

    Whatever you do, I suggest you find someone with a BB7s and give it a try before you buy anything.
    Dave
    Blog / Strava

  7. #7
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    Quote Originally Posted by askibum02 View Post
    At 355lbs, would I be better off with the 180mm set on the front?
    Yes. I'm "only" 233lbs and 180mm front / 160mm rear is perfect for me.

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