I'm on my third tube in 2 weeks since I got a flat tyre from a nail.

They're not being punctured, they are all splitting along a seam which isn't even facing the road. I have tried checking for something causing it in the rim or tyre but failed to locate anything. I tried finding different tubes, but all the shops seem to have the same brand of Chinese tubes.

What could be causing this? Can it be prevented?

  • How old are the tubes? I have used one "fresh" from a box, which split just from being handled. The box was probably a decade old and while tube was pliable, it was also expired perhaps from storage conditions.
    – Criggie
    Aug 26, 2023 at 21:32
  • 1
    @Criggie I don't know how old they are, I can't read Chinese and didn't keep the boxes. But since they were shipped all the way to mid Pacific thats a potential cause I guess. I didn't know tubes have a finite shelf life. My 20km commute tomorrow wont be much fun
    – Kilisi
    Aug 26, 2023 at 21:35
  • What condition is your rim tape in?
    – Paul H
    Aug 27, 2023 at 16:20
  • @PaulH it looks/feels fine, the wheel itself is about 6 months old and had no issues until the nail puncture
    – Kilisi
    Aug 27, 2023 at 18:29
  • Maybe not even old, just simply defective, tubes. Aug 29, 2023 at 13:44


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