Advertise on Bikeforums.net



User Tag List

Results 1 to 14 of 14
  1. #1
    Senior Member
    Join Date
    Jun 2012
    Posts
    122
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Tire size for 26" wheel.

    I have two Bontrager 26" Mountain bike wheels. The rims are 7/8" wide alumimium. What would be the thinest tire I could safely use for the wheel. I'm converting my MTB into a commuter. I would also like 80psi for the tires.

  2. #2
    7-speed doomsday prepper ThermionicScott's Avatar
    Join Date
    Aug 2011
    Location
    CID
    My Bikes
    1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX
    Posts
    8,941
    Mentioned
    12 Post(s)
    Tagged
    0 Thread(s)
    While you might be able to get away with using 1" tires, I think 1.25-1.5" would be perfect for commuting.
    Quote Originally Posted by chandltp View Post
    There's no such thing as too far.. just lack of time
    RUSA #7498

  3. #3
    Senior Member
    Join Date
    Jun 2012
    Posts
    122
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Who makes a 26" 1.25" tire that holds 80psi?

  4. #4
    Senior Member IthaDan's Avatar
    Join Date
    Jan 2012
    Location
    Ithaca, NY
    My Bikes
    Click on the #YOLO
    Posts
    4,658
    Mentioned
    8 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by otis66 View Post
    Who makes a 26" 1.25" tire that holds 80psi?
    Quick google shows kenda qwiks are rated to 85 PSI

    http://www.cyclesport.com/road-bike/...E-2634-X-12534

    Shimano : Click :: Campy :: Snap :: SRAM : Bang

  5. #5
    Insane Bicycle Mechanic Jeff Wills's Avatar
    Join Date
    Mar 2008
    Location
    other Vancouver
    Posts
    6,961
    Mentioned
    22 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by otis66 View Post
    Who makes a 26" 1.25" tire that holds 80psi?
    Several manufacturers, and Performance has a couple on sale:
    http://www.performancebike.com/bikes...y=&searchTerm=

    FWIW: I put 26 x 1.25" Tioga City Slickers on my mountain bike a few years ago. They were rated at 100psi. This made the bike a fun and fast commuter.
    Jeff Wills

    All my bikes.

  6. #6
    rebmeM roineS JanMM's Avatar
    Join Date
    Jan 2006
    Location
    Indiana
    My Bikes
    RANS V3, RANS V-Rex, RANS Screamer
    Posts
    11,854
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Running these 26x1.25" Forte tires on one of my bikes.
    http://www.performancebike.com/bikes...99_-1___400237
    RANS V3 (steel), RANS V-Rex, RANS Screamer

  7. #7
    Senior Member Bill Kapaun's Avatar
    Join Date
    Feb 2007
    Location
    Mid Willamette Valley, Orygun
    My Bikes
    86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
    Posts
    7,382
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    These are what I use on my grocery getter- 100 PSI & relatively inexpensive.

    http://www.biketiresdirect.com/produ...et-runner-tire

  8. #8
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    26,176
    Mentioned
    14 Post(s)
    Tagged
    0 Thread(s)
    +1 to all of the above. I used Nashbar's "City" 26x1.25" tires on an early 90's Trek MTB that came with 2.125" OEM tires and the Nashbar's fit and worked fine. You will have to recalibrate your cyclometer if you use one.

  9. #9
    Senior Member
    Join Date
    Jun 2012
    Posts
    122
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I went to two LBS today and I ended up getting Specialized Nimbus Sport 26X1.5 tirs. 80psi. Theses were the only 26X1.5 80psi tires I could find. So far the tires are riding pretty good.

  10. #10
    Senior Member Bill Kapaun's Avatar
    Join Date
    Feb 2007
    Location
    Mid Willamette Valley, Orygun
    My Bikes
    86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
    Posts
    7,382
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Why the fixation with 80 PSI?

  11. #11
    Senior Member
    Join Date
    Jun 2012
    Posts
    122
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    80psi gives me a nice smooth ride. I'm also a Clyde...345LBs.

  12. #12
    Senior Member Bill Kapaun's Avatar
    Join Date
    Feb 2007
    Location
    Mid Willamette Valley, Orygun
    My Bikes
    86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
    Posts
    7,382
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by otis66 View Post
    80psi gives me a nice smooth ride. I'm also a Clyde...345LBs.
    In your original post, you were looking for the thinnest tire that took 80 PSI.
    That was a bit confusing, because it inferred you wanted the thinnest tire that would fit your rims and didn't want one that took more/less pressure.

    Since you only wanted to go to a 1.5" tire, you should have asked if that would fit and if it was available in a tire that took at least 80 PSI.
    Knowing your weight, I wouldn't have recommended a 1.25" tire.

  13. #13
    Senior Member
    Join Date
    Jun 2012
    Posts
    122
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    When I went to my LBS the salesman wanted to sell me 1.25 tires because they did not have 1.5's. I have a Park Tool Big Blue Book Of Bicycle repair that says the tire should be no thinner than 1.5 times the rim width. That would be aprx a 1.372 tire for my rims. I thought the Bike shop was trying to sell me tires that were too thin. The book says that a tire that is too thin for the rim will flatten the profile of the tire. Since I joined this site I can see that a 1.25 tire is a common thing to do. In fact most of the LBS carry 1.25 and not 1.5. It took me a while to find a LBS that had 1.5 80psi in stock. I think the 1.25 would be a better faster tire but because of my weight I got the 1.5. Tire sizes and rim size is new to me. I'm a rookie when it comes to working on modern bicycles.

  14. #14
    Senior Member Bill Kapaun's Avatar
    Join Date
    Feb 2007
    Location
    Mid Willamette Valley, Orygun
    My Bikes
    86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
    Posts
    7,382
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    They tend to be on the conservative side when recommending min/max due to lawyers etc.

    The 26X1.25 are pretty much designed for MB width rims simply due to thee fact narrower 559MM rims just aren't as common.

    I run 26MM tires on my hybrid with 20MM wide rims and nothing looks weird or gives me cause for concern. I would even go to 25MM, although not less than that.

    With your weight, 1.5" sounds good to me. A smaller tire would have to be pumped up to a near rock hard state.
    A bit of cushion will result in less strain on everything when you hit a pot hole.

    As a side note-
    I'd suggest getting your spokes PROPERLY tensioned. At least the rear wheel, since that is the most problematic.
    You are trying to "unwind" 1/2 the spokes when you pedal, so each stroke gives a tightening/loosening effect on the rear spokes.
    Under tensioned spokes kind of get a "running start". This tends to flex the spokes at the bend and results in cumulative metal fatigue.
    Properly tensioned insures the spokes "share the load" evenly and minimize the "running start" effect.
    I'd also avoid standing on the pedal and mashing down hard.

Posting Permissions

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