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  1. #1
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    Squared off rear tire; when do you retire the tire?

    Does anyone have pictures of a squared off rear tire that's ready to be changed?

    My rear tire is starting to get pretty squared off, but i'm not sure if it's something I need to worry about yet.

  2. #2
    ka maté ka maté ka ora pdedes's Avatar
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    when you see the cords is the appropriate time. Move front to back and put on a new front. If you find you are flatting easy and often, that's another sign that the tire is toast
    By the time you're experienced enough to get something germane out of a test ride, you won't need a test ride.

  3. #3
    Iconoclast rat fink's Avatar
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    That about sums it up. Another time, is when there is a significant bulge in the sidewall or tread.
    "Winning is the best deodorant. Someone can look at your bike and say it stinks, but if you win with it, suddenly it's okay." - Jim Busby

  4. #4
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    Quote Originally Posted by pdedes View Post
    when you see the cords is the appropriate time. Move front to back and put on a new front. If you find you are flatting easy and often, that's another sign that the tire is toast
    Squareness in general doesn't matter though?

  5. #5
    don't misunderestimate me BoSoxYacht's Avatar
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    Quote Originally Posted by ruindd View Post
    Does anyone have pictures of a squared off rear tire that's ready to be changed?

    My rear tire is starting to get pretty squared off, but i'm not sure if it's something I need to worry about yet.
    What tire are you using, and how many miles do you have on it?

    I use Michelin Pro4 race SC tires, and get about 3500 miles out of a rear tire.

  6. #6
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    Quote Originally Posted by ruindd View Post
    Squareness in general doesn't matter though?
    correct.

  7. #7
    ka maté ka maté ka ora pdedes's Avatar
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    Quote Originally Posted by ruindd View Post
    Squareness in general doesn't matter though?
    But correct inflation does. Over inflation accelerates the squaring off process btw.
    By the time you're experienced enough to get something germane out of a test ride, you won't need a test ride.

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    I dont' have the answer, but I don't the the right one is to wait until the cords are showing. I had a friend who at one point started getting repeated flats - not pinch flats, and searching his tire, could never fine a shard or pin. Went on for 3 weeks, at which he averaged 2 flats on every 50 mile ride, so he had literally 6-7 flats in a 3 week period. I helped him change one of those and even I couldn't figure out the cause of the flats. His LBS though took one look at the tire (no cords showing) and said that was the culprit. Sure enough, changed it out, and he was back to flat free. (It was a well used tire but the cords weren't quite showing at any point.)

  9. #9
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    Quote Originally Posted by hhnngg1 View Post
    I dont' have the answer, but I don't the the right one is to wait until the cords are showing. I had a friend who at one point started getting repeated flats - not pinch flats, and searching his tire, could never fine a shard or pin. Went on for 3 weeks, at which he averaged 2 flats on every 50 mile ride, so he had literally 6-7 flats in a 3 week period. I helped him change one of those and even I couldn't figure out the cause of the flats. His LBS though took one look at the tire (no cords showing) and said that was the culprit. Sure enough, changed it out, and he was back to flat free. (It was a well used tire but the cords weren't quite showing at any point.)
    It might seem wasteful, but if i've got a lot of miles and lots of nicks and cuts in a tire...I often change it out after the 2nd flat. I don't flat very often (every 6-9 months) and when I do, it's usually due to a worn out tire.

  10. #10
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    I found significant swelling in my back tire after lots o miles. I check mine carefully now.

  11. #11
    ka maté ka maté ka ora pdedes's Avatar
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    Quote Originally Posted by ruindd View Post
    It might seem wasteful, but if i've got a lot of miles and lots of nicks and cuts in a tire...I often change it out after the 2nd flat. I don't flat very often (every 6-9 months) and when I do, it's usually due to a worn out tire.
    I use 3 sets of tires up per year. Good tires have better casings and will hold up when the tread thins out.
    By the time you're experienced enough to get something germane out of a test ride, you won't need a test ride.

  12. #12
    ka maté ka maté ka ora pdedes's Avatar
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    Quote Originally Posted by calgary_jim View Post
    I found significant swelling in my back tire after lots o miles. I check mine carefully now.
    That's casing damage. Replace it.
    By the time you're experienced enough to get something germane out of a test ride, you won't need a test ride.

  13. #13
    Senior Member datlas's Avatar
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    Quote Originally Posted by pdedes View Post
    when you see the cords is the appropriate time. Move front to back and put on a new front. If you find you are flatting easy and often, that's another sign that the tire is toast
    Yes.

    /thread
    Quote Originally Posted by RUOkie View Post
    never underestimate the idiocy of BF.

  14. #14
    Senior Member oldbobcat's Avatar
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    When tread becomes too thin to keep pointy objects from penetrating the tube.

    When the flat part ripples when I deflate the tire.

  15. #15
    Senior Member Homebrew01's Avatar
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    Quote Originally Posted by hhnngg1 View Post
    I dont' have the answer, but I don't the the right one is to wait until the cords are showing. I had a friend who at one point started getting repeated flats - not pinch flats, and searching his tire, could never fine a shard or pin. Went on for 3 weeks, at which he averaged 2 flats on every 50 mile ride, so he had literally 6-7 flats in a 3 week period. I helped him change one of those and even I couldn't figure out the cause of the flats. His LBS though took one look at the tire (no cords showing) and said that was the culprit. Sure enough, changed it out, and he was back to flat free. (It was a well used tire but the cords weren't quite showing at any point.)
    There was probably a tiny sharp object stuck inside the tire that was causing new flat. Of course a new tire fixed it. Finding and removing the object would have fixed it too.

    I ride down to the cords too.
    Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike

  16. #16
    Goodbye Leeroy Jenkins tagaproject6's Avatar
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    Quote Originally Posted by ruindd View Post
    Squareness in general doesn't matter though?
    Quote Originally Posted by gregf83 View Post
    correct.
    I pretty much square off my tires and replace them when I get too many flats or when the cords show. I'm a cheap bastitch.
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  17. #17
    Senior Member clausen's Avatar
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    The thinner the rubber the better.


  18. #18
    Senior Member Homebrew01's Avatar
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    ^^ Now you can replace them.
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  19. #19
    Senior Member 99Klein's Avatar
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    Quote Originally Posted by oldbobcat View Post
    When tread becomes too thin to keep pointy objects from penetrating the tube.

    When the flat part ripples when I deflate the tire.
    This
    When you argue with an idiot, from a bystanders point of view, it may be hard to discern which is the idiot. (dis·cern: Verb - Perceive or recognize)

  20. #20
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    Put the bike in a trainer, get someone on it to turn the cranks and use a razor knife to round out the tire (think lathe). They do this to race car tires to customize them for specific tracks/conditions.

  21. #21
    Senior Member Homebrew01's Avatar
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    Quote Originally Posted by CrankAndYank View Post
    Put the bike in a trainer, get someone on it to turn the cranks and use a razor knife to round out the tire (think lathe). They do this to race car tires to customize them for specific tracks/conditions.
    Yup. Then get a nice rasp file to your frame tubes to make them aero.
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  22. #22
    Senior Member 99Klein's Avatar
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    Quote Originally Posted by CrankAndYank View Post
    Put the bike in a trainer, get someone on it to turn the cranks and use a razor knife to round out the tire (think lathe). They do this to race car tires to customize them for specific tracks/conditions.
    I like this. Use to race RC cars and we would shape our own tires (and groove them).
    When you argue with an idiot, from a bystanders point of view, it may be hard to discern which is the idiot. (dis·cern: Verb - Perceive or recognize)

  23. #23
    Senior Member Nick Bain's Avatar
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    To finish off my squares I go to my local roundabout and practice my cornering skills.
    Quote Originally Posted by toddles View Post
    Nick, I don't necessarily like agreeing with you -- but your spot on.

  24. #24
    Senior Member Scorer75's Avatar
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    I'm riding squares and also don't replace them till they start getting flats that don't happen when the tires are newer.

    I'm curious though, is there any loss of performance riding squared tires???

  25. #25
    Senior Member Nachoman's Avatar
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    Quote Originally Posted by calgary_jim View Post
    I found significant swelling in my back tire after lots o miles. I check mine carefully now.
    My riding partner found a significant bulge in his back tire just as we began an 80 mile ride. Luckily we were only a few blocks from his home and he was able to change tires in just a couple minutes. That could have been a potential disaster at high speed.
    .
    .

    Two wheels good. Four wheels bad.

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