Ditto here
We had the exact same failure in September. I contacted Sailun and they told me to work it out with dealer. Dealer was skeptical that it would be covered under warranty and I’ve yet to here back. I posted pictures of my failure back then and it looks identical to your failure. I have since gotten rid of the Sailuns. I was lucky in that I think the tread came off in a ring and there was no damage. But I have reinforced the rear hydraulic lines with shielding just for insurance
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