As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI FOR TAKEOFF, CREW HEARD A ''THUD'' AND THEN THE AIRCRAFT PULLED TO THE RIGHT. THE CREW STOPPED AND SHUT DOWN THE AIRCRAFT TO INVESTIGATE. THE NR 4 WHEEL ASSY HAD CRACKED ABOUT ONE-HALF WAY AROUND THE CIRCUMFERENCE DEFORMING IT SO THAT IT WOULD NOT ROLL. THE LOWER TORQUE LINE WAS DAMAGED BY THE WHEEL. 125 LANDINGS SINCE LAST NDI. (X)