CORP SMA LANDED WITH BRAKES PARTIALLY ON AND SUBSEQUENT HARD BRAKING FROM LONG LNDG BLEW TIRE.

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WAS ASSIGNED FLT IN COMPANY SMA DEPART TYR ON IFR FLT PLAN OR HOU. I WAS CURRENT IN ACFT AS FOR LNDGS IN PREVIOUS 90 DAYS; BUT WAS ALMOST TO THE 90 DAY LIMIT. USUAL ACFT FLOWN WAS HEAVIER ACFT A TWIN ENG TURBO PROP. FOR LNDG I HAD MY FEET POSITIONED AS I DO IN THE SMT; ON THE RUDDER PEDALS IN THE SMT; I AM OFF BRAKES WHEN MY HEELS REST ON THE BOTTOM OF THE PEDALS. ON LNDG ACFT SEEMED TO SWERVE LIKE A BRAKE WAS DRAGGING. I CORRECTED SWERVE AND CONTINUED ROLLOUT. ON TAXI IN TO RAMP ACFT HANDLED NORMALLY. DEPARTED HOU FOR TYR ON IFR FLT. FLT WAS NORMAL TILL ARR IN PATTERN AT TYR. TWR CLRED FOR RIGHT BASE ENTRY TO ACTIVE RWY. I WAS SECOND BEHIND AN ACFT DOING TOUCH AND GOES. ACFT DOING TOUCH AND GOES DID NOT SEEM TO IMMEDIATELY START TKOF ROLL AFTER LNDG. SPACING WAS GETTING CLOSE BUT THE OTHER ACFT WAS ACCELERATING AND I WAS CLRED TO LAND. AT THIS POINT I CONSIDERED THE THOUGHT OF GOING AROUND; BUT AS THE OTHER ACFT APPEARED IT WOULD BE AIRBORNE BEFORE I TOUCHED DOWN I CONSIDERED THE REMAINING RWY I HAD TO BE ENOUGH WITH A LITTLE HARDER THAN NORMAL BRAKING. AFTER T/D I APPLIED HARDER THAN NORMAL BRAKING. ACFT AGAIN FELT LIKE IT WANTED TO SWERVE. AT THIS POINT LEFT TIRE WENT FLAT. ACFT WAS STOPPED AT END OF RWY; BUT COULD NOT TAXI CLR FOR FEAR OF DAMAGING RIM AND WHEEL PANT. AFTER FLAT WAS REPAIRED ACFT WAS TAXIED TO HANGAR. OTHER TIRE HAS SLID FROM HARD BRAKING BUT DID NOT GO FLAT. AFTER TIRE CHANGE ACFT TAXIED NORMALLY WITH NO TENDENCY TO SWERVE WITH A DRAGGING BRAKE. LATER; SITTING IN ACFT AND POSITIONING MY FEET ON THE PEDALS AS I WAS DURING LNDGS; I COULD SEE I WAS LNDG WITH THE SOLE OF MY BOOTS DEPRESSING BRAKES. DURING LNDG ROLLOUT WHEN I THOUGHT I WAS JUST APPLYING BRAKES; I LOCKED WHEELS AND SKIDDED THE TIRES CAUSING THE SWERVE ON LNDGS AND FLAT TIRE. EVEN THOUGH I WAS LEGALLY CURRENT BY THE FAR'S; FLYING A DIFFERENT AND HEAVIER ACFT ALMOST ALL OF THE TIME; I DID NOT NOTICE THE INCORRECT POSITIONING OF MY FEET ON THE BRAKES OF THIS ACFT. THE DESIRE NOT TO USE TIME FOR A GO AROUND AND RESULTING LONGER FLT CONTRIBUTED BECAUSE IF I HAD GONE AROUND AND ON THE NEXT LNDG HAD THE FULL LENGTH OF THE RWY; THE HARDER BRAKING WOULD NOT HAVE BEEN THOUGHT NECESSARY WHICH WOULD PROBABLY HAVE NOT RESULTED IN THE FLAT TIRE. THIS EMPHASIZES THE NEED TO BE SURE TO RECHK EVERYTHING WHEN FLYING AN ACFT YOU ARE CURRENT IN ACCORDING TO THE FAR'S BUT IT IS ONE YOU DO NOT DO A LOT OF FLYING IN.