BLOWN TIRES ON R TRUCK OF ACR WDB IN LNDG PROC TOUCHDOWN DYNAMICS.

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WHILE TAXIING OUT FOR DEP THE ANTI-SKID ILLUMINATED. UPON CYCLING THE ANTI-SKID SWITCH THE LIGHT EXTINGUISHED AND WE PROCEEDED. WE ARRIVED AT OUR DEST ON SCHEDULE AND PROCEEDED TO LAND. AFTER COMPLETING THE BEFORE LNDG CHKLIST WE ONCE AGAIN NOTED THE ANTI-SKID LIGHT BEING ILLUMINATED. AGAIN WE CYCLED THE SWITCH AND THE LIGHT EXTINGUISHED ONLY TO ILLUMINATE AGAIN ON VERY SHORT FINAL JUST AS I; THE PF; BEGAN THE FLARE TO LAND. SINCE WE WERE LNDG ON A RATHER SHORT FIELD (6700 FT) AND TO FULLY ENSURE STOPPING WITHIN THE DISTANCE OF THE RWY; I ELECTED TO LAND WITH THE ANTI-SKID SYS DISENGAGED. UPON TOUCHDOWN THE ACFT SUFFERED WHAT FELT LIKE MULTIPLE TIRE BLOW-OUTS ON THE R MAIN TIRE SIDE. THIS CAUSED THE ACFT TO VEER VIOLENTLY R. I IMMEDIATELY APPLIED L RUDDER TO KEEP THE ACFT ALIGNED WITH THE RWY CTRLINE. THE ACFT SLOWED RAPIDLY TO TAXI-SPD AT WHICH TIME I EXITED THE RWY ONTO AN ADJOINING RWY AND STOPPED THE ACFT. POST-FLT INSPECTION REVEALED THAT ALL 4 R MAIN TIRES HAD BLOWN AND #5'S TIRE RIM HAD COME APART. AS THE R MAIN GEAR BELLY DOOR WAS OPENED IT WAS NOTED THAT A TIRE RIM FRAGMENT ABOUT THE SIZE OF A LARGE KITCHEN PLATE FELL TO THE GND. NO OTHER DAMAGE WAS NOTED. COMPANY DISPATCHED MECHS; BRAKE ASSEMBLIES; AND TIRES TO OUR LOCATION. THE ANTI-SKID SYS WAS GND-TESTED AND FOUND TO BE OPERATIONAL. TIRES WERE REPLACED AND BOTH ITEMS SIGNED-OFF PROPERLY IN THE ACFT LOGBOOK. ACFT WAS RELEASED AND RETURNED TO BASE WITH NO FURTHER INCIDENT. BEING IN A CRITICAL POS APPROX 100 FT ABOVE THE RWY TOUCHDOWN ZONE TO A 6700 FT RWY AND THE ANTI-SKID LIGHT ILLUMINATED; I MADE A SPLIT-SECOND DECISION TO DISENGAGE THE ANTI-SKID SYS; LAND; AND USE MANUAL BRAKING. AS IT TURNS OUT NOW THIS ACTION PRODUCED AN OVERWT ADJUSTMENT TO THAT RWY'S ANALYSIS. I BASED MY DECISION UPON A POSSIBLE MALFUNCTIONING ANTI-SKID SYS THEREFORE SELECTING MANUAL BRAKING TO ENSURE A SAFE LNDG WITHIN THE TOTAL RWY DISTANCE AVAILABLE TO ME. AFTER A SHORT DISCUSSION WITH CTL TWR AND ARPT PERSONNEL; THEY FULLY BELIEVED THAT AT NO TIME WAS SAFETY COMPROMISED AND DOCUMENTED THE INCIDENT AS AN 'ARPT ALERT;' END OF STORY. IT IS NOW BELIEVED THAT THE RIM PART THAT FELL OUT OF THE R MAIN GEAR BELLY DOOR MAY INDICATE A BLOWN TIRE JUST AFTER TKOF. THIS MAY HAVE BEEN PRECIPITATED BY THE INTERMITTENT ANTI-SKID PROBLEM. THE SAME ACFT; AS IT'S LOGBOOK WILL SHOW; HAS HAD A HISTORY OF ANTI-SKID PROBLEMS WHICH RESULTED IN BLOWN TIRES; END OF STORY.