This week I'll start on a little tour of roughly 800km and after inspecting my tires I found a small glass shard inbeded in my tire, it left this cut and I am not super sure if it will still be safe for some high speed descends? What are your thoughts? I think it hasn't gone all the way through

About to go on a 800km tour and found a glass shard in my tire
byu/MrJokemanPhD inbikewrench



by MrJokemanPhD

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21 Comments

  1. Tire looks fine, but a new one is only 50-100 bucks depending where you buy gp5000. Id replace it just to give yourself some peace of mind. You can save the tire for training or the next replacement.

  2. Aware-Location-5426 on

    You can boot it and ride.

    Most of my tires have at least a few cuts like this and with a boot it’s no problem at all.

    Since you’re about to go on tour you might want to replace it for peace of mind but you definitely don’t have to.

  3. Green-Dimension3240 on

    If it’s not bulging under pressure it’s probably fine. I end up with lots of small cuts on mine through the life of the tire. If it’s smooth and not opening up to expose the casing, I don’t worry about it.

  4. If you don’t see the threads inside the cut, you are fine. It means it’s shallow, and the structural part of the casing is fine.

    Just as a side note, have an extra tire and a couple of spare tubes at you. You might not need them, but it’s better to have them. Who knows, maybe you’ll even save somebody along the way.

    Oh, and definitely get quality tubes (don’t cheap out), but absolutely get the regular weight ones as spares. It’s ok to have superlight ones installed in the tires, but changing on the road side a super light tube, only to pinch it (because it’s just that easy) is kinda sucky sucky. Also, regular tubes last better in heat and low temps, and in time. The risk of pulling out one after 6 months of storage in a bag, and have it fail on you just after you install it, is definitely lower. If you have an ouchie during your extended ride and use a regular weight tube, you can always replace it later with a light weight one, and keep the regular one for another use.

  5. I always suggest looking at these from the inside and making sure the casing is not cut.

    If it is, you can try booting it.

  6. johnny_evil on

    Pretty normal. If it’s not leaking air, didn’t cut through to the casing, and isn’t bulging, I would ride it. I do ride tubeless, so if it did cut through, I would plug it and continue, and maybe patch it from the inside the next time I clean the wheels.

  7. I will never forget when I took off my first book pair of tires.. the amount of glass and steel imbedded was boggling. The traction has to be all glass! Kevlar Continentals never had a flat.

  8. When it fails, it will be dusk in a remote location, raining, clouds of mosquitoes,and there will be strange noises in the bushes. Buy a new tire for the trip.

  9. funandgames12 on

    If I was going to go touring I would maybe use thicker tires. Those slicks are asking for it lol.

  10. tweeeeeeeeeeee on

    800km tour? definitely get a new tire. my mind would be thinking about that cut the whole ride. based on wear, maybe even replace the other tire. 

  11. TheDaysComeAndGone on

    Looks perfectly fine. Even if this went all the way through the threads (carcass) it probably wouldn’t cause a catastrophic failure (and you’d see and feel a bulge before that).

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