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.
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.