Look at the tread on your vehicle’s tyres. Over time, with use, the tread depth will reduce and that indicates that the tyre is wearing off.
Sometimes a tyre would develop a bulge. This could be because of high temperature, improper tyre pressure, bad roads, or poor tyre quality.
If you do not use your motorcycle often and it has been stationary in extreme weather conditions, it can develop cracks.
Another irreparable damage. If the sidewall has the slightest of the cuts, it is impossible to repair it, especially on tubeless tyres.