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  1. #1
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    tire not sitting in rim correctly?

    hi. new.

    got a '72 peugeot road bike. i can't remember if this has been happening since i bought these aluminum wheels late last year, but..

    every time i change a tube/tire, when putting back the tire, i make sure the rippled "teeth" on the bottom edge of each side of the tire are uniformly peeking/stationed just above the top of the rim. but it seems that almost every time there is about 1/6 of the circumference of the tire where it is significantly sinking down into the rim. i try to prick it back up with a spoon, but it just appears that it's not sitting on the rim correctly. it's not a twist in the tube or anything, and it's hard to see but i don't THINK it's that the rimstrip is off to one side or something...

    i usually can get it so it's not that bad, but this evening it seems to be a little more irreparable. thoughts? if i do end up riding on it anyways, how will it [negatively] affect my tires/wheels/whatev?

    thangz for reading.

  2. #2
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    Uneven tire placement can cause problems. Fix it before you have to make the walk of shame.
    Making it sit on the rim evenly is the priority. My practice is to put just enough air in the tire to hold it against the rim. I twist the tire sideways against the rim as necessary -working your way around the rim- to get it as even as I can. Do this on both sides. If it is problematic, I usually will do this in a couple/three steps while adding a bit more air to the tire each time. It never comes out perfect, but usually the variance is about 1/16th of an inch at the most. (thickness of a penny)
    - Solo Attack: When you attack, let the sprint group lead you out. You take no points. But when they sit up, you put your head down and hold threshold. Remember: When you see Jesus you are still about 2 minutes from blacking out. Hang on.

  3. #3
    Low car diet JiveTurkey's Avatar
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    Try overinflating it until it pops in place then deflate to the correct pressure. The key words are "in place;" don't inflate it so much that it risks popping. Tires can hold a lot more pressure than they're rated for though.
    Quote Originally Posted by slopvehicle View Post
    Not wearing a helmet makes me more aware of my surroundings. I find myself anticipating the hardness of concrete 50 or 100 feet in front of me, it's almost a zen-like connection between my face and the pavement.

  4. #4
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    Sounds like you are mounting tires desgned for hooked edge rims in straight sided rims. With this combination you cannot inflate your tires anywhere near the pressure printed on the sidewall without risking a blowout.

  5. #5
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    I pretty much follow post #2 pushing down the rest of bead rather than lifting up the low area inflating as I go. A little tire talc and a little over inflation at the end pops everything in to place nicely as in post #3.

  6. #6
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    i had a similar recurring problem with tire not seating properly. it turned out, after much, too much, time and effort, that it was the rim tape causing the problem. it had "ridden" up on the inside of the rim, preventing the tire from seating correctly. i ended up installing new VERY NARROW rim tape.

    problem solved.

    huey

    i reread your post and saw that you dont think it's the rim tape. sooo... nevermind!
    Last edited by hueyhoolihan; 05-27-11 at 03:05 AM. Reason: spelling

  7. #7
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    Quote Originally Posted by JiveTurkey View Post
    Try overinflating it until it pops in place then deflate to the correct pressure. The key words are "in place;" don't inflate it so much that it risks popping. Tires can hold a lot more pressure than they're rated for though.
    This. 90% of the time, it works every time.

  8. #8
    Senior Member Retro Grouch's Avatar
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    Quote Originally Posted by Infidel79 View Post
    This. 90% of the time, it works every time.
    ????????

  9. #9
    Senior Member Retro Grouch's Avatar
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    Where exactly on the rim is the tire sitting low? If it happens to be exactly opposite the valve stem try this:

    1. Deflate your tire to about 5psi.
    2. Push the valve stem straight into the rim. You don't have to go very far 1/4 to 1/2 inch is plenty.
    3. Reinflate normally.

    The area of the inner tube adjscent to the valve stem is thicker than the rest of the tube. Sometimes that thicker area gets caught under the tire bead.

  10. #10
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    Quote Originally Posted by Retro Grouch View Post
    ????????
    Uh, I was just agreeing that a little extra air pressure helps seat the bead uniformly around the rim, most of the time. Pardon my word-play.

  11. #11
    Senior Member FeelTRush's Avatar
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    A Kenda tire recently refused to seat on a 26" rim. I became frustrated after eight cycles of massaging the tire, and took Sheldon's advice. I turned up the pressure . . . to 120 psi. Either blow or seat. After a scrunchy rubber sound, it seated perfectly. I bled it down to 70 psi and rode.

  12. #12
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    Take spray bottle with some water...or some windex will also work. Spritz along the bead of the tire all the way round while turning the wheel. Gently inflate and knead the tire as you go and the tire should seat. The water/Windex acts as a temporary lub to help stubborn beads seat. Clean up your rims and you should be good to go.

    Be cautious if you attempt over inflation along with this technique!

  13. #13
    Senior Member Retro Grouch's Avatar
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    Quote Originally Posted by Infidel79 View Post
    Uh, I was just agreeing that a little extra air pressure helps seat the bead uniformly around the rim, most of the time. Pardon my word-play.
    I knew what you ment and frankly, I agree. I just couldn't resist the urge to poke a little fun. If you're offended, I apologize.

  14. #14
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    Quote Originally Posted by Retro Grouch View Post
    I knew what you ment and frankly, I agree. I just couldn't resist the urge to poke a little fun. If you're offended, I apologize.
    Not offended at all! I'm the new guy around here, so I didn't know quite how to react.

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