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  1. #1
    Join Date
    Dec 2010
    Location
    Boise Idaho
    Posts
    1,162
    [QUOTE=goldfinch;642567]I would like to get 25s for my Madone that also has 650 wheels. But I can't seem to find the Continental GP4000s in that size, only the 23s. Any other good tires to recommend?

    you aren't below average silly, you just need a NEW BIKE - KIDDING

    okay I did some research, Terry makes a 650C in 28mm. Not finding any 650C in a 25. TELLUS TT TIRE 650 X 28C (28-571)by terry MSRP is $45.

    To determine if they would fit, measure the clearance (where your tire goes thru the frame) Look at your existing tires and see how much room you have
    on the front fork and two spots on the frame on the rear (where the tire passes thru) The bike hermit is thinking you'd want to have 32 mm at bare minimum to fit a 28 mm.
    Typically tires will measure slightly smaller than stated - around 26 mm as opposed to 28 mm.

    Hope that helps, how frustrating to be limited to only a 23mm.
    Sky King
    ____________________
    Gilles Berthoud "Bernard"
    Surly ECR "Eazi"
    Empowering the Bicycle Traveler
    biketouringnews.com

  2. #2
    Join Date
    Apr 2011
    Location
    perpetual traveler
    Posts
    1,267
    [QUOTE=Sky King;642698]
    Quote Originally Posted by goldfinch View Post
    I would like to get 25s for my Madone that also has 650 wheels. But I can't seem to find the Continental GP4000s in that size, only the 23s. Any other good tires to recommend?

    you aren't below average silly, you just need a NEW BIKE - KIDDING

    okay I did some research, Terry makes a 650C in 28mm. Not finding any 650C in a 25. TELLUS TT TIRE 650 X 28C (28-571)by terry MSRP is $45.

    To determine if they would fit, measure the clearance (where your tire goes thru the frame) Look at your existing tires and see how much room you have
    on the front fork and two spots on the frame on the rear (where the tire passes thru) The bike hermit is thinking you'd want to have 32 mm at bare minimum to fit a 28 mm.
    Typically tires will measure slightly smaller than stated - around 26 mm as opposed to 28 mm.

    Hope that helps, how frustrating to be limited to only a 23mm.
    Thanks Sky, I'll measure for clearance.

    EDIT: nope, not going to fit
    Last edited by goldfinch; 06-18-2012 at 10:12 AM.
    Trek Madone 4.7 WSD
    Cannondale Quick4
    1969 Schwinn Collegiate, original owner
    Terry Classic


    Richard Feynman: “The first principle is that you must not fool yourself and you are the easiest person to fool.”

  3. #3
    Join Date
    Dec 2010
    Location
    Boise Idaho
    Posts
    1,162
    [QUOTE=goldfinch;642711]
    Quote Originally Posted by Sky King View Post

    Thanks Sky, I'll measure for clearance.

    EDIT: nope, not going to fit
    crap, if I come across anything I will PM you.
    Sky King
    ____________________
    Gilles Berthoud "Bernard"
    Surly ECR "Eazi"
    Empowering the Bicycle Traveler
    biketouringnews.com

  4. #4
    Join Date
    Sep 2013
    Location
    Montreal, QC
    Posts
    764
    An old thread but it may do just the same instead of inventing the wheel. hihi

    As recommended here somewhere on the forum for me, I am going to change my 23mm tires for some 25mm.

    I called my LBS to see what they recommended for my Kuota's wheels (I have Amercican Classi Aero 420 wheels)
    http://www.amclassic.com/en/products...els/420-aero-3

    They said what is left in stock are the Roubaix Armadillo Elite at $80Cdn and the Armadillo All condition at $70. I will certainly shop on line before as prices are always a lot, even with the 15% rebate I get (it only covers our taxes here).

    Now, I'm looking for comfort, grip and better control on my bike. I don't care much for speed, tight corners, etc. He said both are good but in my case, the all around would do just the same. The Elite is foldable. That would be the main difference.

    I printed the specs of both tires and I don't understand all of it. ie. casing of Elite is 120tpi vs 60 for the all condition.

    So which one would you opt to purchase for what I am looking for? Or would it be something different?

    Price is not really an issue (although money does not grow on tree) as I like to have the best quality/value for the $ possible.

    Thank you very much.

  5. #5
    Join Date
    Feb 2010
    Location
    Michigan
    Posts
    477
    I just bought some Continental GP 4000S for a great deal--got 2 for $80. Plan to use them with my new custom wheel set when it arrives, I heard great things about these tires.
    2012 Trek Lexa SL
    2012 Giant TCX2
    2015 Trek Remedy 7
    2016 Trek Lexa C
    2016 Specialized Hellga-Fat Bike

  6. #6
    Join Date
    Apr 2009
    Location
    Tucson, AZ
    Posts
    4,632
    I have a set of Continental Gatorskins for both my road and CX bikes, though the CX bike still has the knobblies on there. 25mm for the roadie, 28mm for the CX.

    I have a set of Continental Grand Prix 4000S for the road bike as well, once I've gone through the Gatorskins.

    The TPI is "threads per inch" and is essentially the weave on the cloth that makes up the body of the tire. High TPI means that it'll roll more easily, but is less puncture-resistant. If you're going for puncture resistance and don't care so much about the rolling resistance, go for a low-TPI tire. Folding tires (probably the Elite) are lighter (in general) than a wire-bead tire. Wire beads are heavier, but they stay on the rim better. (Which is a plus if you ride hard, but it's a bear changing flats.)

    I'm a Continental fan, myself. I don't know about the durability of Specialized's tires (I think that's what those are). For the Continental tires we've mentioned, the Gatorskins are higher rolling resistance (I think), less "grippy" compound, but are hard-wearing. The GP4000 is softer, a bit grippier. It's a "faster" tire. The downside is that it's not as puncture-resistant, though they may have changed something with the 4000S to fix that.
    At least I don't leave slime trails.
    http://wholecog.wordpress.com/

    2009 Giant Avail 3 |Specialized Jett 143

    2013 Charge Filter Apex| Specialized Jett 143
    1996(?) Giant Iguana 630|Specialized Riva


    Saving for the next one...

  7. #7
    Join Date
    Sep 2013
    Location
    Montreal, QC
    Posts
    764
    Thank you. I love your explanation too on the TPI.

    So for me, I will look for a low TPI. I want to avoid flats. (told you somewhere I paranoid on that hahaha).

    I was reading this to hubby and he said he would prefer not to use wire ones. He knew about changing flats and he'd be the one having to do this for me (lucky me I know!) I don't ride hard either. For time being, I mostly do bike paths (we have some nice ones around area) and I'm just fine for now with this. I am very careful where I "step" with my wheels. But I told him I wanted comfort and a tire that grips to the ground vs one that is barely touching the ground. I want to feel the road. Not fly over it.

    Someone at work was telling me about the Continental Gatorskin Clincher. I'll have to look it up.
    http://www.probikekit.ca/bicycle-tyr.../10780033.html

 

 

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