2004 DODGE STRATUS COUPE Tires Problems

I'VE HAD 2 SETS OF COOPER TIRES (COOPER CS4-215/50R17 95 VPUT ) ON MY CAR IN THE PAST 3 YEARS, PLUS 1 TIRE REPLACED IN 9 MONTHS FROM DATE-OF-PURCHASE AFTER THE ORIGINAL TIRE FROM THE 2ND SET WAS DESTROYED, BLOWN-OUT, FROM WEAKNESS IN THE TIRE. TOTAL OF 9 TIRES IN THE PAST 3 YEARS. EACH AND EVERY TIRE HAS BEEN SHOWN TO BE WEAK AND FREQUENTLY LEAK AIR; THEY ALSO WEAR DOWN QUICKLY. THE 1ST SET LASTED ME 47K MILES BEFORE NEEDING TO BE REPLACED. THE 2ND SET HAS BEEN ON MY CAR A YEAR( FEB '10-MAR '11), AND I'VE HAD NOTHING BUT PROBLEMS WITH THEM SINCE THEY WERE INSTALLED. I HAVE MADE FREQUENT TRIPS BACK TO THE TIRE RETAILER THAT INSTALLED THEM (BLAIN'S FARM & FLEET) FOR TIRE REPAIRS. I BELIEVE THESE TIRES ARE TOO EXPENSIVE ($145/TIRE) AND ARE VERY DEFECTIVE. THIS INDEED IS A SAFETY HAZARD, AND A...