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  1. #1
    #5639 robertkat's Avatar
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    Mar 2007
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    New tire love = Grand Bois

    Just wanted to share because I'm really into good tires and wheels. My geared road bike( early 80's Viner) had been equipped with 25mm GP4000s, in yellow, they look great. A few weeks ago I hit something and ripped open the back tire. Seemingly impossible to find in colors, I replaced them with 26mm Grand Bois Cerf. Oh man these tires are so nice. I understand now why people like them so much. Put them to the test yesterday on a 300k over rough roads. No flats, no problems, seemed to float over all but the biggest bumps and pot holes. 100 psi front, 105 back. The bike itself just feels better. Nice tires make a difference, and even though people have said they are not as great with being flat proof, I have no problem with stopping to fix a puncture, and I rarely flat anyway.

  2. #2
    Randomhead
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    Aug 2008
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    I have a Viner from about 1980. Do you have any pictures?

  3. #3
    Senior Member CHAS's Avatar
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    Aug 2008
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    Silverthorne, Colorado
    My Bikes
    Rawlings Drakkar, Specialized Roubaix, Pivot, Challenge Trike, Tandem
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    Trying to wear down my Continental GP 4 season 28mm tires enough that I can justify ordering Grand Bois.
    Pivot 5.7
    Rawland Drakkar 650B love it with 38mm Soma tires
    2009 Specialized Roubaix Ultegra
    Santana Fusion Tandem
    2010 Specialized TriCross
    Challenge Concept Trike
    One knee scoped so far.

    Homophobia is so gay.

  4. #4
    Senior Member late's Avatar
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    Oct 2002
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    Great tire, but you have to be skinny. They can blow off a rim at 80psi.
    We are as gods, we might as well get good at it.
    Stewart Brand

  5. #5
    Senior Member
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    Apr 2008
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    Ventura County, CA
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    Quote Originally Posted by late View Post
    Great tire, but you have to be skinny. They can blow off a rim at 80psi.
    That has not been my experience, I regularly run them at 95psi.

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