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    Changed my tube, went to the store, came back and saw this. Anyone know what could have happened? Bought the bike (used!) a couple of weeks ago, but it seemed in great shape

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    11 Comments

    2. jzwinck on

      Is that the metal rim having split open?

      What PSI did you inflate your tires to?

    3. BeardedBaldMan on

      Braking surface had worn down over time leading to a weak rim and being inflated to 100 psi finished it off.

      It happened to a friend on a group ride and resulted in an expensive taxi ride home, really people should keep an eye on wall thickness with calipers (but few are that detail orientated)

    5. ewonyn on

      thanks for the response! most likely due to old wheels+brakes combo. i noticed some “nugging” (dunno if thats a word tbh) from the rear wheel when braking. then suddenly the tire went flat, and it seemed like the tube was punctured. i guess it might all have been because of the brakes/rim

    7. GunTotinVeganCyclist on

      Off topic: please, clean that drive train. I can’t see the pulley wheels under all that crud. You’ll wear out a chain and then everything it touches very quickly riding that dirty. Get a chain checker and learn how to use it, it’ll pay for itself after the first chain replacement.

    8. FixFix75 on

      Did you buy this bike from a private person or bike shop? I suppose the first, In case you bought it at a shop I’d go back with it pronto. Any bike shop that wants to keep their customers would replace the wheels / rebuild the wheels with new rims after selling something like that.

    11. blackdvck on

      Most rims have a wear indicator,either a channel in the braking surface or a small dot ,once they no longer appear on the rim it’s time for a new one .
      This failure is usually the result of poorly adjusted brakes that rub on the rim .

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