What was found
UPON LANDING, RT MLG TIRE WENT FLAT. PILOT WAS UNABLE TO TAXI THE ACFT CLEAR OF THE ACTIVE RUNWAY WITHOUT DOING DAMAGE TO THE ACFT, DUE TO DEFLATED TIRE. THIS RESULTED IN RUNWAY BEING CLOSED FOR A PERIOD OF 30 MINUTES. MX WAS SUMMONED TO THE ACFT AND THEY REPLACED THE WHEEL/TIRE ASSEMBLY, THEREFORE ALLOWING THE ACFT TO CLEAR THE RUNWAY. DISASSEMBLY OF THE FLAT TIRE WHEEL ASSY REVEALED THE TUBE HAD FAILED, SIMILAR TO THOSE PREVIOUSLY REPORTED ON NUMEROUS OCCASIONS. SUBMITTER HAS SPOKEN TO MFG AND DETERMINED MFG HAS CHANGED RUBBER COMPOSITION. THIS, IN CONJUNCTION WITH COLD TEMPERATURES SEEMS TO BE THE CAUSE OF THIS FAILURE.