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  1. #1
    Senior Member
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    May 2013
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    Victoria, BC
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    a really old Trek 800 and a new Specialized Crosstrail Sport Disc
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    Specialized Nimbus 700C-28 proper inflation

    ...back again with some more tire questions. OK, I got my wife the new Specialized Vita, it turns out it is a 2012 model which is why we got a good deal on it. It has Nimbus 28's on it with a specified inflation recommendation of between 115 and 125 psi. I've read that these ratings are based on an average of a 170 lb rider on a 30 lb bike. My wife weighs 100 lbs and the bike is just over 25, a significant difference! I think that the recommended inflation will be way to high for her so I'm looking for answers or suggestions from those of you with some experience in this area. What should we use as proper inflation for her tires? Need to know as she wants to get out and try her new steed out on the road...

    Thanks!!

  2. #2
    Senior Member ColonelSanders's Avatar
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    Jan 2014
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    Brisbane, Australia
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    1995 Trek 830 + New Hybrid arriving in late 2014
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    I would start with 115 psi, ride it for a bit to see how things feel, then perhaps try 100 psi, ride around and then compare.
    You can have my Disc Brakes, when you pry them from my cold, dead hands.

  3. #3
    Galveston County Texas 10 Wheels's Avatar
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    Nov 2007
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    Try 70 lbs PSI.
    [SIZE=1][B]What I like about Texas[/B]
    http://www.youtube.com/watch?v=PGukLuXzH1E

    Set F1re To The Ra1n ( NY Night Rain Ride)
    http://www.youtube.com/watch?v=W7jfcWEkSrI

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