I have a next to unused GP5000 road tire, 25mm, which unfortunately has three cuts in the sidewall. I would like to ask, if it these constitutes a safety problem - or if they rather are to be looked upon like regular cuts in the tread. What is the verdict: dead or not dead? Thanks, Morten
I would not ride that tyre. Pretty sure I can see tube in the second photo, and that's asking for a sudden blowout.
You might choose to put a boot/patch on the inside of the tyre, and use this as an indoor trainer tyre only. Might be okay on rollers, would make a great front-wheel tyre for a direct-drive trainer (ie, the wheel that doesn't turn at all.)
I certainly would not ride on the road with that ever.
It is dead, buy a new tyre.
Not hard workaround repair. Had similar with very long cut (whole side) on my loved Conti.
1st tried to glue from inside, but after some time or increasing pressure (often over 6 bar) tube went out again...
Also similar problem after 2 simultaneous ~3-5 mm long punctures / cuts of old Schwalbe - yellow puncture strip and tube was visible and soon went flat again - placed next tread cut from an old tyre inside and seems to work fine too, tire has a bit wider shape now, but would tell there is no noticable riding difference (front wheel).
Of course not.
Why are you risking your life on the word of a bunch of internet strangers you're never going to meet or be able to hold accountable?
Go to a qualified specialist and have the suspect tyre examined…
Whatever else, please remember that if it does fail and any kind of law-enforcement finds out you Posted this query, you will have no weakest wheel to stand on.