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  1. I’ve been riding my bike for about two years now, which I got second-hand, so there’s a chance it came with subpar tyres. I’ve occasionally ridden with them underinflated, though never to the point where the rim touched the ground. The rims aren’t damaged either.

    While I frequently ride in rainy conditions, I always store the bike in a dry place. There was one incident where I slipped off the pavement and the tyres rubbed against it for around 10 meters, but I doubt that’s the cause of the issue. Crash happened about 1.5 years ago.

    Could weather cycles be affecting the tyres? Or maybe the tyres were just low-quality to begin with?

  2. Ass_Over_Teakettle on

    Can you see anywhere on the sidewall that shows the age of the tire? Looks like it might be dry rot and your tires just aged out.

  3. How old is the tyre ? Ignoring punctures, sidewalls can show wear before the tread surface.

    ETA: if you look closely at the tyre, near where it makes contact with the rim, you may be able to find a date code of when it was molded. Sometimes in the YYWW format.

  4. There is a large difference between rim touching the ground and “properly inflated”. This is consistent with not riding with enough air in the tires. You need a pump with a gauge, going by “feel” isn’t effective as most people end up thinking that 30-40 psi “feels” inflated.

  5. MeMyselfundAuto on

    that looks like rubbing brake pad, are your pads clear of the tire? the side way lines look like under inflated damage

  6. Sonofa-Milkman on

    What pressure do you run in them? You need to check your pressure often, because with a low volume tire a small amount of air loss equals a big pressure loss.

  7. “No damage to rim!” … the last 3 photos show that the rim was contacting the ground. With a properly inflated tire that would be impossible.

    “Occasionally under inflated” is like telling my doctor I only have 1 drink per week. You rode this bike for MILES on borderline flat tires

  8. RenaissancemanTX on

    Tire rot. Tires are organic and they decompose due to age and exposure to the elements such as heat, dryness, and sun light.

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