I have no idea if they are or are not safe to ride on but have never seen this issue on ANY tyre on ANY motorcycle I have ridden from 1979 to the present day. I have contacted the supplier for a response - will see how that goes (but am not hopeful)
They are fitted to a 2014 Primavera 125 3V (as pictured)
⚠️ Last edited by FGWT on UTC; edited 2 times