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  1. #1
    Senior Member Scorer75's Avatar
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    Different size tires front and back???

    I ordered a set of 25mm Gatorskins from PBK.

    I received one 23mm and one 25mm. They want me to return the 23mm and then they'll ship me a 25mm.

    I was thinking, can't I just use a 23mm on the front and a 25mm on the rear? Anybody done this or know a reason not to?

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    Senior Member Rutnick's Avatar
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    Quote Originally Posted by Scorer75 View Post
    I ordered a set of 25mm Gatorskins from PBK.

    I received one 23mm and one 25mm. They want me to return the 23mm and then they'll ship me a 25mm.

    I was thinking, can't I just use a 23mm on the front and a 25mm on the rear? Anybody done this or know a reason not to?
    force/attack are 22/24 mm.

    just put the 23mm on the front and be done.

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    Senior Member Scorer75's Avatar
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    Anyone actually ride a setup like this?

    Any feedback would be appreciated.

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    Senior Member IbikezLA's Avatar
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    I know some people that do it. They talk about ride quality and durability, I don't know if they're right or wrong.
    put the fun between your legs

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    Refrigerator Raider Hater fordmanvt's Avatar
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    Tell them they need to pay the shipping both way to correct their mistake, or they can refund you the cost of shipping one way and you'll keep the 23mm.

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    Put the 23 on the front and you'll be fine

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    In beaurocratic limbo urbanknight's Avatar
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    Quote Originally Posted by Scorer75 View Post
    Anyone actually ride a setup like this?

    Any feedback would be appreciated.
    Yes, my father rode 23 up front and 25 in the back. He liked how it evened out the bulges since the rear takes on more weight. He also claimed a better ride quality, which I can't verify, but it definitely didn't hurt anything.
    "Well, I guess you can cut the arts as much as you want... Sooner or later, these kids aren't going to have anything to read or write about." (Richard Dreyfus as Glenn Holland)

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    I've raced and trained on 23 on the front and 25 on the rear for years. The 25 will far outlast a 23 on the rear, just remember to run about 10 psi less in the rear, check the Shelton site for the exact pressure.

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    Tete de Couch Hunt-man's Avatar
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    I ran a 23 front and 28 rear for a while. My bike did not explode. The bigger rear is actually nice. A bit more comfortable. I did feel faster with a 23 in the rear as compared to the 28 but I could have just been playing mind games with myself but a mind is a terrible thing to waste... really though the lower pressure could be the difference. The 28 was very stable and huged the pavement.
    This is my bicycle. There are many others like it, but this one is mine. My bicycle is my best friend. It is my life. I must master it as I must master my life. Without me, my bicycle is useless. Without my bicycle, I am useless. I must ride my bicycle true. I must ride faster than my enemy, who is trying to drop me. I must drop him before he drops me. I will.

  10. #10
    Long Distance Cyclist Machka's Avatar
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    I rode the last 1.5 months of a cycling tour over here in Australia in 2004 with 23s on the back and 25s on the front. I flatted my rear tire and my folding tires were 23s. No big deal.

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    As with so many things, Sheldon Brown has advice on this issue:

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

    "Most bikes come with identical tires front and rear. This is all right for general use, but if you want to optimize your bike, you should consider using different tires front and rear. The front and rear tires have different loadings and different requirements.

    • Narrower Front, Wider Rear

      If lightness is the primary goal, tire width/weight is limited by the risk of pinch cut flats, a.k.a. "snake bites." Since there is more weight carried on the rear tire, you can get away with a slightly narrower tire in front than you can in back.
    • Wider Front, Narrower Rear

      A wider front tire makes sense in many applications, however, when handling and ride comfort are considered. A wider tire will generally provide better cornering traction than a narrower one, assuming appropriate inflation pressure. A wider tire also provides superior shock absorbency. I personally prefer a slightly wider tire in front, since I suffer from some wrist discomfort on occasion.
    "

    Here in rainy Seattle, one LBS I know recommends a wider tire in front during the winter (rainy) season.

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    Mixing sizes is common in mountain bike racing, or at least was when i was doing it. No reason it should cause trouble on a road bike. The rear wheel carries more weight, so you'd think the larger tire should go there, but you could also argue that you really, really don't want the front to slide, so you want more rubber on that end. In practice I doubt it makes enough difference to matter.

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    I've got a 25 on front and 23 in back. Not by choice, but it works fine.

    I bought my bike used and it came with 25's. I had to replace one tire and I wanted 23's- so I'm mixing it up until I replace the other. I put the 25 up front to dampen bumps as described in the Sheldon quote.

    It's fine if you don't mind knowing/seeing that they don't match.

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    Lost AngryScientist's Avatar
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    23 front, 25 rear on my commuting bike as of recently, helps on the rough roads a little, generally speaking, with gatorskins, you'll hardly notice it.

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    23 front, 24 rear, I bought the tires at different times and the 24 runs at the same pressure as my old 23 rear tire. If anything the wider is more comfortable and there hasn't been any decrease in speed.
    2006 Mongoose Black Diamond Triple
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    Longing for a Tail Wind Stickney's Avatar
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    I have ridden for years with a 25 front and 28 rear (I am clyde) and have never had any issues as a result of the difference in tire size.

  17. #17
    AEO
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    conti attack/force comes with 22mm front and 24mm rear.
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

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    Senior Member Scorer75's Avatar
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    Quote Originally Posted by fordmanvt View Post
    Tell them they need to pay the shipping both way to correct their mistake, or they can refund you the cost of shipping one way and you'll keep the 23mm.
    It was free shipping, and they did offer to pay for my costs to ship the tire back, and would then ship me the correct tire, with free shipping. No complaints there.

    I just figured if I could run the 23/25 setup, why bother returning it and waiting for a replacement?

    I actually installed them this morning, I'll report back on how they feel.

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