0

I bought a new set of tyres (Continental Grand Prix 5000). Being an idiot, I managed to cut the sidewall of the tyre with a knife while removing the packaging.

I have looked at repairing it, and came across items such as the Park Tool TB-2 Tyre Boot. However, I noticed that these fixes are only meant to be temporary, and not permanent.

Is it safe and advisable to use a tyre boot to repair a new tyre which I plan to ride 3000-4000km on, or do I need to cut my losses and just buy a new one?

5
  • 2
    How deep is the cut? Can you upload a picture? Apr 24, 2021 at 19:34
  • 1
    Buying a new one is the only and safest option. You could try to be creative and find some use for it.
    – Carel
    Apr 24, 2021 at 20:47
  • 2
    High tire pressures of road tires and the ability to go faster on road bikes make a sidewall cut on such a tire fatal to it, in my mind. Even if nothing ever happened, the presence of such a flaw would invite such disquiet in my head that enjoying the ride would be impossible for me. Then, what is the point?
    – Jeff
    Apr 24, 2021 at 21:29
  • No, the fix is not meant to be even temporary, as per instructions: "The TB-2 is designed for emergency use. A patched tire should be replaced as soon as possible.".
    – EarlGrey
    Apr 26, 2021 at 15:18
  • You know, I have heard of people cutting up sections of old tires to use as tire boots. This could be an option.
    – Weiwen Ng
    Apr 26, 2021 at 16:03

2 Answers 2

4

No, a tyre boot will absolutely not be enough. Some side cuts are repairable by stitching. However, it is better for MTB tyres that use smaller pressures. I do not know if it is likely to work on a road tyre.

0

As your gut feelings are telling you, no.

And unfortunately it's not even good as a trainer tyre. Unless you consider good "waking up your neighbours due to a loud bang in the middle of the night"!

Please consider the trigger for the failure (and the volume control for your booming alarm) is the pressure needed in such a small tyre. If you can run at 1 bar, you would be ok, the bang will not be that loud. But you would probably ruin the rim.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.