1981 DODGE B250 Tires Problems

I HAD 3 TIRE FAILURE IN A SHORT TIME JULY 28 THROUGH AUG 15, 1999. THE TIRES WERE PURCHASED FROM PEP BOYS. CORNELL IS A HOUSE BRAND. THE FIRST TWO TIRES TO FAIL WERE ALMOST BRAND NEW FRONT TIRES. ONE CAME APART (THE THREAD PEELED OFF) WITH ABOUT 1,500 MILES ON IT MAX. WHEN I GOT HONE 2,000 MILES LATER I GOT IT REPLACED AT PEP BOYS MELBOURNE, FL BUT I HAD TO PAY. ON THE WAY HOME FROM PEP BOYS THE VAN HANDLED BADLY AND I THOUGHT THE NEW TIRE HAD A PROBLEM. IT TURNED OUT THE OTHER FRONT TIRE WAS ABOUT TO LOSE IT'S TREAD AND THEY MADE ME PAY FOR A REPLACEMENT OF THAT TIRE (THIS ONE HAD ABOUT 3,500 MILES ON IT). A FEW WEEKS LATER I NOTICED ONE OF THE REAR TIRES WAS BEGINNING TO HAVE THE SAME PROBLEM (IT HAD A LOSE PART ON...