2002 Dodge Grand Caravan Tires Problems

I BOUGHT 4 NEW PIRELLI P400 TOURING TIRES AT A DISCOUNT TIRE STORE IN VENTURA COUNTY CALIF ABOUT 3 OR 4 YEARS AGO. ABOUT 1 YEAR AGO ONE OF THE TIRES HAD A TREAD SEPARATION. I JUST GOT BACK FROM THE TIRE DEALER AND ONE MORE OF THE 4 TIRES HAS A TREAD SEPARATION. I HAVE BEEN DRIVING 35 YEARS AND HAVE NEVER HAD A SINGLE ONE BEFORE. IS THIS BAD LUCK OR ARE THESE BAD TIRES. *AK

WHILE DRIVING STEERING WHEEL VIBRATED. CONSUMER WAS ABLE TO MAINTAIN CONTROL OF THE VEHICLE, AND PULLED OVER. CONSUMER NOTICED THAT DRIVER'S SIDE REAR GOODYEAR, WRANGLE TIRE TREAD SEPARATED FROM THE WHEEL. ALL FOUR TIRES HAD CRACKS AROUND THE SIDEWALLS. *AK

2003 DODGE GRAND CARAVAN ES WITH MICHELIN MX4 P215/60R17 96S TIRES (DOT B9KX DVMX 1102). TWO TIRE HAVE HAD DAMAGED SIDEWALLS. ONE TIRE ON THE PASSENGER REAR RESULTED IN A SLOW LEAK. THE OTHER, ON THE PASSENGER FRONT, HAS A BULGE AFTER CONTACT WITH THE CURB. THE SENCOND TIRE WAS FINE FOR ONLY MINUTES EARLIER DURING AN OIL CHANGE AND RECALL WORK AT THE DEALERSHIP. NO ABNORMAL CONTACT WITH A ROAD HAZARD OCCURRED DURING THE TWO MILE DRIVE FROM THE DEALER TO HOME. *AK

NAR 05/21/2003 *MR MICHELIN MX4 P215/60R17 TIRES. 3 TIRE FAILURES WITHIN 12 MONTHS DUE TO ROAD HAZARDS. *CB

THREE TIRE FAILURES WITHIN 12 MONTHS DUE TO "ROAD HAZARDS". THE TIRES ARE MICHELIN 215/60R17. ONE WAS A SLOW LEAK THE DISCOUNT TIRE REP SAID WAS DUE TO ROAD DAMAGE, THE SECOND WAS A HOLE IN THE SIDE WALL AFTER HITTING A CURB WHILE PARKING, AND THE THIRD WAS A SIDEWALL BUBBLE DISCOVERED WHEN THE SECOND TIRE WAS REPLACED DURING A COURTESY TIRE ROTATION. *NLM

TIRE BLEW OUT AT 5000 MILES AND OTHER 3 TIRES BLEW OUT BEFORE 9000 MILES. PLEASE PROVIDE ANY ADDITIONAL INFORMATION. TS