In Reply to: 4000 rear tire issue? posted by Billy Alexander on November 11, 2017 at 00:00:14:
From your picture I would say you are in the market for a new tire. It appears the sidewall has torn loose from the bead.
It will only get worse, there is no fix that I know of. Once the tube makes it's way through the breach, you will have a blow out and be stranded where ever you are. I doubt it will last for a day of bush hogging.