Advertise on Bikeforums.net



User Tag List

Results 1 to 14 of 14
  1. #1
    Senior Member Thumpic's Avatar
    Join Date
    Dec 2007
    Location
    The Sunny South
    Posts
    1,543
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)

    27 inch tire sizes....fractions vs 10nths?

    I learned the hard way about 26 inch tires......1 1/4 is NOT 1.25.....does this hold true with other tire sizes as well?
    Thumpic....

    Green is the new "CHEAP"

  2. #2
    Can'tre Member 3alarmer's Avatar
    Join Date
    Nov 2010
    Location
    ,location, location...
    My Bikes
    old ones
    Posts
    7,490
    Mentioned
    129 Post(s)
    Tagged
    3 Thread(s)
    Quote Originally Posted by Terrierman View Post
    No wonder everybody hates you.

  3. #3
    Senior Member Thumpic's Avatar
    Join Date
    Dec 2007
    Location
    The Sunny South
    Posts
    1,543
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Thanks!
    Thumpic....

    Green is the new "CHEAP"

  4. #4
    aka Tom Reingold noglider's Avatar
    Join Date
    Jan 2009
    Location
    West Village, New York City
    My Bikes
    too many
    Posts
    19,203
    Mentioned
    53 Post(s)
    Tagged
    1 Thread(s)
    In 27" there are no decimal sizes, thank goodness. So there is 27 x 1-1/4 but no tire, as far as I know, called 27 x 1.25.
    You don't read my signature anyway, do you?

    Tom Reingold, noglider@pobox.com
    Residences: West Village, New York City and High Falls, NY
    Blogs: The Experienced Cyclist; noglider's ride blog

  5. #5
    Senior Member Thumpic's Avatar
    Join Date
    Dec 2007
    Location
    The Sunny South
    Posts
    1,543
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by noglider View Post
    In 27" there are no decimal sizes, thank goodness. So there is 27 x 1-1/4 but no tire, as far as I know, called 27 x 1.25.
    Thats what I thought too; but niagra cycle had a warning in a description stating that a 27 x 1 1/4 was NOT a 27 x 1.25.........

    http://www.niagaracycle.com/categori...-1-4-black-gum
    Last edited by Thumpic; 01-05-14 at 08:22 PM.
    Thumpic....

    Green is the new "CHEAP"

  6. #6
    Insane Bicycle Mechanic Jeff Wills's Avatar
    Join Date
    Mar 2008
    Location
    other Vancouver
    Posts
    6,775
    Mentioned
    16 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Thumpic View Post
    Thats what I thought too; but niagra cycle had a warning in a description stating that a 27 x 1 1/4 was NOT a 27 x 1.25.........

    http://www.niagaracycle.com/categori...-1-4-black-gum
    That note makes no sense at all!

    One exception to Sheldon's cribsheet referenced above: Continental lists the 20" Grand Prix tire as 20 x 1 1/8". Since it fits the 406mm bead seat diameter rim, it really should be called a 20 x 1.125" since 20 x 1 1/8" usually refers to the 451mm BSD rim and tire. This causes a bunch of confusion within the recumbent bike community.

    I really prefer the ETRTO rim and tire measurements.
    Jeff Wills

    All my bikes.

  7. #7
    Senior Member
    Join Date
    Nov 2008
    Location
    Bay Area, Calif.
    Posts
    4,820
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Jeff Wills View Post
    I really prefer the ETRTO rim and tire measurements.
    Agreed, the ETRTO system is definitely superior but unfortunately many sales sites fail to list it.

    In addition to problems caused by companies like Continental that violate the decimal vs. fraction convention there's also confusion for tires that are an integer width (i.e. 1" or 2"). Not to mention unsuspecting customers who might think that a 26 x 1.75 tire should be a good replacement for one marked 26 x 1 3/4 (must have spent a couple hours trying to get it on the rim back when I was a kid).

  8. #8
    Senior Member
    Join Date
    Aug 2007
    Location
    Evanston, IL
    My Bikes
    '82 Masi GC, '79 Medici, 70-something RRB, various other transients
    Posts
    908
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Thanks for this thread. I am working on a Schwinn World Tourist my sister-in-law dragged home. It needs a rear tire and I worried about the decimal-vs-fractions issue, given that Schwinn 26" tires are weird that way (I was burned by that several years ago), and now basically unobtainable. Kenda makes some, but I can never get them to seat properly - grrrr...

  9. #9
    Quirky Grifter LesterOfPuppets's Avatar
    Join Date
    Sep 2008
    Location
    Vancouver, USA
    My Bikes
    My War
    Posts
    20,506
    Mentioned
    53 Post(s)
    Tagged
    7 Thread(s)
    You need 590mm 26"?

    Michelin World Tour are pretty nice. Some can still be tough to seat on some steel rims though.
    1980ish Free Spirit Sunbird fixed * 1996 Mongoose IBOC Zero-G * 1997 KHS Comp * 1990-ish Scapin * Lemond Buenos Aires Triple

  10. #10
    Senior Member
    Join Date
    Aug 2007
    Location
    Evanston, IL
    My Bikes
    '82 Masi GC, '79 Medici, 70-something RRB, various other transients
    Posts
    908
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Thank you! I thought the Kendas were the only option. Maybe we need a thread to identify all the manufacturers of 26x1-3/8" tires?

  11. #11
    Quirky Grifter LesterOfPuppets's Avatar
    Join Date
    Sep 2008
    Location
    Vancouver, USA
    My Bikes
    My War
    Posts
    20,506
    Mentioned
    53 Post(s)
    Tagged
    7 Thread(s)
    Quote Originally Posted by smontanaro View Post
    Thank you! I thought the Kendas were the only option. Maybe we need a thread to identify all the manufacturers of 26x1-3/8" tires?
    I think there is one somewhere, with about a dozen 590 choices.

    Schwinn 597mm tires, on the other hand - Kenda is probably the only choice tbere.
    1980ish Free Spirit Sunbird fixed * 1996 Mongoose IBOC Zero-G * 1997 KHS Comp * 1990-ish Scapin * Lemond Buenos Aires Triple

  12. #12
    Senior Member
    Join Date
    Aug 2007
    Location
    Evanston, IL
    My Bikes
    '82 Masi GC, '79 Medici, 70-something RRB, various other transients
    Posts
    908
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Crap... Yes, 597. I was a bit distracted by the thought of the walk to the train this morning. Should have left the computer off.

  13. #13
    Senior Member rekmeyata's Avatar
    Join Date
    Sep 2010
    Posts
    5,742
    Mentioned
    8 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by noglider View Post
    In 27" there are no decimal sizes, thank goodness. So there is 27 x 1-1/4 but no tire, as far as I know, called 27 x 1.25.
    http://www.rei.com/product/861128/pa...-tire-27-x-125

  14. #14
    aka Tom Reingold noglider's Avatar
    Join Date
    Jan 2009
    Location
    West Village, New York City
    My Bikes
    too many
    Posts
    19,203
    Mentioned
    53 Post(s)
    Tagged
    1 Thread(s)
    That's an error that REI made. Zoom in on the tire label. It says 27x1-1/4. I haven't seen a 27x1.25 tire anywhere, and my sample size is pretty big.
    You don't read my signature anyway, do you?

    Tom Reingold, noglider@pobox.com
    Residences: West Village, New York City and High Falls, NY
    Blogs: The Experienced Cyclist; noglider's ride blog

Posting Permissions

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