Advertise on Bikeforums.net



User Tag List

Results 1 to 10 of 10
  1. #1
    Faith-Vigilance-Service Patriot's Avatar
    Join Date
    Jul 2004
    Location
    Port Orchard, WA
    My Bikes
    Trinity, Paradisus, Centurion, Mongoose, Trek
    Posts
    8,333
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    26" tires on 650c rims?

    I am going to be building a pair of matching hybrids for some friends of mine, but am used to using regular 650x23-25c tires for my wifes bike. Her friend wants a slightly wider tire. Can I use a slightly wider 26x1-1/8" treaded tire on 650c road rims? Or even a 26x1.25"? I know the forks and brakes have the clearance, but I'm not sure if those sizes are compatible with road rims.
    President, OCP
    --"Will you have some tea... at the theatre with me?"--

  2. #2
    Retro-nerd georgiaboy's Avatar
    Join Date
    Mar 2005
    Location
    Morningside - Atlanta
    My Bikes
    2002 Cannondale Badboy, 2004 Bianchi Vigorelli
    Posts
    1,584
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hopefully this will help. I don't know the explicit answer.

    http://www.sheldonbrown.com/tire-sizing.html
    Would you like a dream with that?

  3. #3
    Cornucopia of Awesomeness baxtefer's Avatar
    Join Date
    Oct 2004
    Location
    not where i used to be
    Posts
    4,847
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    no. 26" MTB rims are 559mm and 650c's are 571mm
    {o,o**
    |)__)
    -"-"-

    O RLY?

  4. #4
    Retro-nerd georgiaboy's Avatar
    Join Date
    Mar 2005
    Location
    Morningside - Atlanta
    My Bikes
    2002 Cannondale Badboy, 2004 Bianchi Vigorelli
    Posts
    1,584
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Reading the chart by Sheldon Brown it says:

    26 x 1 (650 C) 571 mm Triathlon, time trial, small road bikes
    26 x 1 1/4 597 mm

    That seems to indicate that a 26" x 1" tire would work on a 650c rim. But not anything wider than 1".

    Maybe someone has some clarification.
    Would you like a dream with that?

  5. #5
    Senior Member
    Join Date
    Dec 2005
    Location
    St. Paul, MN
    My Bikes
    Motobecane Le Champion Team, Trek 6700 Custom
    Posts
    72
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by georgiaboy
    Reading the chart by Sheldon Brown it says:

    26 x 1 (650 C) 571 mm Triathlon, time trial, small road bikes
    26 x 1 1/4 597 mm

    That seems to indicate that a 26" x 1" tire would work on a 650c rim. But not anything wider than 1".

    Maybe someone has some clarification.

    It's just the way you look at the nominal name. In most cases 26x1.5" bead diameter does not = 26x1 1/2 bead diameter

  6. #6
    Senior Member halfspeed's Avatar
    Join Date
    Nov 2003
    Location
    SE Minnesota
    My Bikes
    are better than yours.
    Posts
    11,660
    Mentioned
    48 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Patriot
    I am going to be building a pair of matching hybrids for some friends of mine, but am used to using regular 650x23-25c tires for my wifes bike. Her friend wants a slightly wider tire. Can I use a slightly wider 26x1-1/8" treaded tire on 650c road rims? Or even a 26x1.25"? I know the forks and brakes have the clearance, but I'm not sure if those sizes are compatible with road rims.
    No. MTB 26" tires are not compatible with 650c rims. When in doubt, look at the bead seat diameter to determine compatability. Things like 26x1 1/8 can be deceptive. Not all 26" tires are compatible.

  7. #7
    Senior Member halfspeed's Avatar
    Join Date
    Nov 2003
    Location
    SE Minnesota
    My Bikes
    are better than yours.
    Posts
    11,660
    Mentioned
    48 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Primo Tiki
    It's just the way you look at the nominal name. In most cases 26x1.5" bead diameter does not = 26x1 1/2 bead diameter
    You're right that they are not compatible, but neither of those are bead seat diameters. Read Sheldon's page again.

  8. #8
    ctp
    ctp is offline
    Senior Member
    Join Date
    Dec 2005
    Location
    Concord, CA
    My Bikes
    late 80s Paramount MTB with Xtracycle, late 80s Paramount MTB converted to single speed, Bianchi Nuovo Record converted to fixie, custom Tom Board lugged steel racer, 1950s Claude Butler, 1950s Dawes, custom chopper built on 50s cruiser by me
    Posts
    165
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    When in doubt check the ETRTO number (and they changed it, what is it now, ISO?)

    Anyway, if those numbers match, then stuff will fit together. You have likely seen them...25-559, or 28-622...the first is a 1" wide MTB tire that would be labled 26X1 in your LBS, the second you would better recognize if it were called 700C X 28. Me and my old boss would know exactly what to grab if you came in and asked for a 28-622...I make no claims for anyone else being as geeky as us.

    That second number is the bead seat diameter. The bead seats must match.

  9. #9
    Faith-Vigilance-Service Patriot's Avatar
    Join Date
    Jul 2004
    Location
    Port Orchard, WA
    My Bikes
    Trinity, Paradisus, Centurion, Mongoose, Trek
    Posts
    8,333
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Ok, what I am looking for is basically a more comfy tire to ride that will fit a 650c road rim. Something a smidgeon more hefty than a 650x23c, and also with a little tread, not slicks.

    Any takers?
    President, OCP
    --"Will you have some tea... at the theatre with me?"--

  10. #10
    ctp
    ctp is offline
    Senior Member
    Join Date
    Dec 2005
    Location
    Concord, CA
    My Bikes
    late 80s Paramount MTB with Xtracycle, late 80s Paramount MTB converted to single speed, Bianchi Nuovo Record converted to fixie, custom Tom Board lugged steel racer, 1950s Claude Butler, 1950s Dawes, custom chopper built on 50s cruiser by me
    Posts
    165
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Patriot
    Ok, what I am looking for is basically a more comfy tire to ride that will fit a 650c road rim. Something a smidgeon more hefty than a 650x23c, and also with a little tread, not slicks.

    Any takers?
    Sure - so a 22-571 isn't comfy enough. And you want it to be "smidgeon more hefty" than a 23-571. I'd start looking for a 28-571, or maybe even a 32-571.

    How about this one here? The Terry Tellus ST at $40, ETRTO 28-571

    http://www.sheldonbrown.com/harris/tires/571.html

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •