What was found
WORSENING VIB & FUEL OVERBURN CAUSED FLT TO DIVERT. *S/D* VIBRATION CAUSED BY SUSPECTED BLOWN TIRE(S) DEPARTING OUT OF SYD. LEFT REAR TIRE BLOWN ON LEFT BODY GEAR. WING TO BODY FAIRING PANEL 193CL DAMAGED BY THROWN TREAD. REPLACED BOTH NR 3 & 4 TIRES. REINSTALLED BODY FAIRING PANEL WITH INTERIM REPAIR ACCOMPLISHED. BODY PANEL DAMAGE NOTED AS CAUSE OF VIBRATION ON LEFT SIDE. PANEL DAMAGE CAUSED ADD'L DRAG RESULTING IN HIGHER FUEL BURN.