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Thread: 23c vs. 25c

  1. #26
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    I had 20s, I now ride 26s. The best part is not being paranoid about flats any time i go over any kind of bump in the road. I run much lower pressure in the 26s than i did with the 20s.

  2. #27
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    Article about tire sizing by Sheldon Brown (R.I.P.)

    http://www.sheldonbrown.com/tire_sizing.html

    scroll down page to "Dishonesty In Sizing"

  3. #28
    100% torqued
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    I am a big fan of high volume tires. 25c is the smallest I will run. I like 28's best and find lower pressures with higher volmume gets a smoother ride, more forgiveness, higher grip, they may be a little heavier but for the ride, it is worth the compromise.

  4. #29
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    Pressure?

    What pressure are you running in those 28s?

    And 20s and 26s -- where do you buy tires, rkj, OddSizesRuS?

    I've heard of 20s, though I've never seen a pair .. but 26s?

  5. #30
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    Bicycle Quarterly sells 26s and other wide tires.

  6. #31
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    28s and 32s

    Why stop at 25?

    I started running kevlar bead 28s on my touring bike at 85lbs. Very comfy.

    On my cross bike (commuter, trainer) I run 32s at 65 lbs and it's very comfy despite being an aluminum frame.

    When you look at tires, don't just look at width. Different tires have a different cross section. Look at height. Specialized 23s and 25s are not only narrow but very low profile. Panaracer 28s are nearly round in cross section, so they are very high profile. Height provides cushion for comfort and flat prevention.

  7. #32
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    Dialing down the pressure

    I'm running 28s, too, and am trying to tune in the pressure.

    Started at 95 -- that didn't last long.

    Now running 85 rear, 80 front, and I think I'll take it down from there, at least five pounds a tire.

  8. #33
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    Another vote for 25c. I've experienced less pinch flats, without any perfomance dis-advantage. I've been using 25c for about a year now. We had a lot of them at the shop, so I started using them. They work fine for me.

    I remember someone doing a test between 18c and 23c and 23c was faster because of the suspension effect of the fatter tire.

  9. #34
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    In the spring when the 35mm studded tires come off I am planning to mount 28mm tires on the rims instead of the 23mm tires that were used this year. Until recently I thought that generally the narrower the tire the faster it was, but have been learning otherwise lately which was quite a surprise and still is an idea difficult for me to accept because narrow tires are so much associated with the faster bicycles that it seemed obvious and certain and common sense that narrow tires and rims must be faster.

  10. #35
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    Sorry to revive and old thread, but I'm curious to know what the minimum safe clearance should be between tire and fork bridge? thanks

  11. #36
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    Quote Originally Posted by MerlinAma View Post
    Is anyone having trouble getting 25's to fit in their frames?

    I think someone is coming out with a new 24 tire as it will fit most frames where a 25 would not. Actually just googled 24 tires and there are a few now.
    On my 2004 Trek 5900 a 25 would rub the crown of my fork so I ran a 23 up front and 25 in back.

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