Tire Bulge Problems of Infiniti J30

2 vehicles involved with futura brand tires bought @ pep boys store# 165 with multiple incident dates. On 4/28/2006 bought 8 tires for 2 autos, 2001 vw jetta - p205/65r15 futura touring hr & 1995 Infiniti J30t - p215/60r15 futura plus touring hr. While hwy driving one day in J30, vehicle suddenly violently became unmangeable, vibrating, pulling, difficult to steer. Pulled off the road to see that 2 front tires and one back had terribly deformed-belts delaminated and bulging in various places. Had to have car towed to pep boys store # 165. 4/6/2001 pep boys removed defective tires and I had little choice but to put back same brand & size tires & had to pay for tires, installation, handling & balance, total $159. 84. 3/7/2012 similar incident while hwy driving vw jetta 2 tires deformed. This time I refused pep solution and bought 4 new tires @ tire kingdom for $342. 09 3/17/2015 driving I-95 north for my dad's funeral in J30 rear tire deformed. Found pep store #1641 titusville fla. Hours later replaced with new definity hp100 tire, paid $41. 26. 4/24/2015 driving I-95 back home to deerfield at w. Palm bch, the other rear tire deformed, slowly made it home hrs later. Bad tire still on car. All tire problems were defective nature and not from road hazard. Car is not drive-able so filed case # 375135 w/pep boys store #165 wants to again change all tires for similar with additional cost to me again. I declined and escalated issue to upper mngmt. Been 1 week now but no response yet after 5-6 phone calls to mgmnt. J30 now has 1 bad tire, 1 replaced tire & 2 original tires and not drive-able.