What was found
(CAN) DURING TAXI FOR TAKEOFF, BOTH RIGHT HAND MAIN WHEEL TIRES FAILED IN THE SIDEWALL AREA. THE NR 4 TIRE CAME OFF THE RIM AND DAMAGED THE OUTBOARD 'WEIGHT ON WHEELS' SENSOR WIRING HARNESS. BOTH TIRES AND THE 'W.O.W' SENSOR WERE REPLACED AND THE AIRCRAFT WAS RETURNED TO SERVICE. BOTH TIRES WERE THOMPSON RECAPS ON THEIR FIRST RECAP CYCLE. THE TIRES HAD 314 HOURS S.O.H. AND 268 HOURS S.O.H.