That is certain batch of PS3 from Thailand last year la. Reason why I did not go for PS3 again when the previous PS3 need replacement.
What is your manufacturing date? Last time I use Made in Hungary, always touge also never peel off. Only the sidewall is quite soft to my liking.
Previously, I also had same experience with ZE-912 rubber peel off but can't blame because that time always travel on rough asphalt.
Now using cheapo Achilles ATR Sport. Damn cheap tyre can whack corner and go gravel road without any issue.
Once the sidewall become more soft in few months time, I'll just buy another ATR Sports2