Advertise on Bikeforums.net



User Tag List

Results 1 to 11 of 11
  1. #1
    Junior Member
    Join Date
    Mar 2008
    Posts
    20
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    best size bike tires?

    I have an 80s Miyata touring bike that I use as a commuter and for riding around the city. I like a fast, smooth ride. It came with 700x25 tires, but the bike shop recently replaced one with a 700x28. Believe it or not, I notice the difference (doesn't glide as easily but could be because the tire tread). My frame is barely my size, I barely clear the top bar, and another bike shop recommended 700x23 since that size tire is actually smaller than the 700x28s.

    My questions is: would a 700x23 tire be suicide being that I ride it in the city for commuting and it's such a thin tire (ie. less stable)? Why would someone use 700x23 vs. 700x25 or 28?

  2. #2
    Senior Member canopus's Avatar
    Join Date
    Mar 2009
    Location
    Kingwood, TX
    My Bikes
    1985 Cannondale SR300, 1985 Cannondale ST400, Gary Littlejohn Cruiser, BMX
    Posts
    1,207
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It isn't the size, it is the manufacturer. I ride a 700X32 that is firmer than my 700x28's at the same pressure. You could try increasing air pressure within reason or replace the tire.

    I personally believe bigger isn't so bad, especially on a commuter.
    1984 Cannondale ST
    1985 Cannondale SR300
    1980 Gary Littlejohn Cruiser
    1984 Trek 760
    1981 Trek 710
    Pics

  3. #3
    Unobtanium-Based Lifeform calamarichris's Avatar
    Join Date
    Sep 2007
    Location
    Carlsbad, CA
    My Bikes
    '09 Felt F55, '84 Masi Cran Criterium, (2)'86 Schwinn Pelotons, '86 Look Equippe Hinault, '09 Globe Live 3 (dogtaxi)
    Posts
    5,196
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by canopus View Post
    It isn't the size, it is the manufacturer.
    +1 Though generally, 700x23 tends to be narrower, faster and less comfortable; 700x28 tends to be wider, cushier, and perhaps an inkling slower.

  4. #4
    Senior Member Yellowbeard's Avatar
    Join Date
    Mar 2009
    Location
    Ontario
    Posts
    735
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by parksung View Post
    I have an 80s Miyata touring bike that I use as a commuter and for riding around the city. I like a fast, smooth ride. It came with 700x25 tires, but the bike shop recently replaced one with a 700x28. Believe it or not, I notice the difference (doesn't glide as easily but could be because the tire tread). My frame is barely my size, I barely clear the top bar, and another bike shop recommended 700x23 since that size tire is actually smaller than the 700x28s.

    My questions is: would a 700x23 tire be suicide being that I ride it in the city for commuting and it's such a thin tire (ie. less stable)? Why would someone use 700x23 vs. 700x25 or 28?
    Any tire works if you can handle it, I have 23s on one of my city bikes (scavenged tires) and 32s on another. The narrower tires usually feel a bit faster, you just have to use higher pressure to avoid pinch flats, which can make the ride a little harsher. From your post it sounds like the shop recommended 23s because they would give you more clearance when you stand over the bike. Are you saying you don't like the 28s?
    I'll eat it first.

  5. #5
    Junior Member
    Join Date
    Mar 2008
    Posts
    20
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Yellowbeard View Post
    Any tire works if you can handle it, I have 23s on one of my city bikes (scavenged tires) and 32s on another. The narrower tires usually feel a bit faster, you just have to use higher pressure to avoid pinch flats, which can make the ride a little harsher. From your post it sounds like the shop recommended 23s because they would give you more clearance when you stand over the bike. Are you saying you don't like the 28s?
    Yes, the shop said to put 23s on so I have more clearance. I don't love 28s since they feel bulkier, but it seems 25s are always out of stock and if I can get more clearance with 23s without killing myself with such skinny tires, I might try them.

  6. #6
    Quirky Grifter LesterOfPuppets's Avatar
    Join Date
    Sep 2008
    Location
    Vancouver, USA
    My Bikes
    My War
    Posts
    21,690
    Mentioned
    68 Post(s)
    Tagged
    9 Thread(s)
    I like 25s the best on road bikes. I've liked the ride of some 28s I've tried, but the having to deflate them to remove a wheel was a bit of a drag.

    What kind of clearance do you need exactly? Fenders?
    1980ish Free Spirit Sunbird fixed * 1996 Mongoose IBOC Zero-G * 1997 KHS Comp * 1990-ish Scapin * Lemond Buenos Aires Triple

  7. #7
    Senior Member wahoonc's Avatar
    Join Date
    Jan 2005
    Location
    On the road-USA
    My Bikes
    Giant Excursion, Raleigh Sports, Raleigh R.S.W. Compact, Motobecane? and about 20 more! OMG
    Posts
    16,303
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Several different things at play. One manufacturer's 28 is another's 25. To me width is less of an issue. Also higher pressure does not automatically mean lower rolling resistance.

    Aaron
    Webshots is bailing out, if you find any of my posts with corrupt picture files and want to see them corrected please let me know. :(

    ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.

    "Cycling should be a way of life, not a hobby.
    RIDE, YOU FOOL, RIDE!"
    _Nicodemus

    "Steel: nearly a thousand years of metallurgical development
    Aluminum: barely a hundred
    Which one would you rather have under your butt at 30mph?"
    _krazygluon

  8. #8
    Junior Member
    Join Date
    Mar 2008
    Posts
    20
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by LesterOfPuppets View Post
    I like 25s the best on road bikes. I've liked the ride of some 28s I've tried, but the having to deflate them to remove a wheel was a bit of a drag.

    What kind of clearance do you need exactly? Fenders?
    clearance from my crotch to the top bar

  9. #9
    Senior Member
    Join Date
    Dec 2007
    Posts
    273
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    For me it's a mental thing, I feel a bit faster, "springier," with a 700 x 25 (I think, having the choice, I would always go with 25 over 23, 23 just seems to cross the line into too skinny/for-not-a-lot-of-benefit territory)...many comment on wider tires being less harsh. I guess I'm not sophisticated enough to notice (or maybe care about) the difference. I used to think that wider tires automatically meant tougher/flat-reisistance but you can get a Marathon Plus in 700 x 25 (I use one on my back wheel) and it's plenty tough.

  10. #10
    Gear Hub fan
    Join Date
    Nov 2008
    Location
    Reno, NV
    My Bikes
    Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
    Posts
    2,830
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    A lot of the choice on tire size is dependent on rider weight. I would not recommend a 700 x 23 to a 250 pound rider while it is fine for a 150 pounder.

    Also within any tire size rolling resistance seems to vary inversely with puncture resistance so you choose your tires, once size is determined, by how much puncture resistance is desired.
    Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro

    Visit and join the Yahoo Geared Hub Bikes group for support and links.
    http://groups.yahoo.com/group/Geared_hub_bikes/

Posting Permissions

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