As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSTALLED 600 X 6 MAIN GEAR TUBES IN JAN 2019 AND AT THE FIRST 100 HOUR I ROTATED TIRES AND UPON ROTATING THE TUBES AND AIRING UP TIRES BOTH TUBES FAILED AT THE PARTING SEAM IN THE MIDDLE OF THE TIRE ALMOST LIKE THERE WASN'T A GOOD BOND BETWEEN THE TUBE HALVES OR THERE WERE THIS SPOTS WHERE THEY WERE JOINED.