2008 FORD F SUPER DUTY Wheels Problems

WE PURCHASED A USED 2008 FORD F250 SUPER DUTY TRUCK THAT HAD BRAND NEW TIRES JUST A FEW MONTHS AGO FROM A DEALERSHIP HERE IN HAWAII. (FEDERAL COURAGIAM A/T LT 285/70R17) WE ALSO PURCHASED A 2 YEAR BUMPER TO BUMPER WARRANTY. APPARENTLY DEFECTIVE TIRES ARE NOT INCLUDED IN THIS WARRANTY. TIRES ARE BUBBLING ON INSIDE SIDEWALL. TOOK VEHICLE TO TIRE SERVICE LOCATION AND WAS TOLD TO REPLACE TIRE IMMEDIATLY. THIS WAS JUST A COUPLE OF WEEKS AGO. NOW SECOND TIRE DOING SAME BUBBLING AND NEEDS TO BE REPLACED TODAY. IT HAS BEEN RECOMMENDED THAT ALL TIRES BE REPLACED AND ARE DEFECTIVE AND DANGEROUS. COULD CAUSE ACCIDENT/INJURY/DEATH.

ON SEVERAL OCCASIONS, WHILE TRAVELING AT SPEEDS BETWEEN 60 AND 70 MPH ON HIGHWAYS WITH POTHOLES, I HIT THE POTHOLES AND IMMEDIATELY FELT A VIOLENT SHAKING OR SHIMMY IN THE FRONT WHEELS. THE SHIMMY OCCURS IN WHICH EVER TIRE HITS THE HOLE AND WILL STOP AS SOON AS I REDUCE SPEED TO ABOUT 40 MPH. THERE IS NO EVIDENCE OF TIE ROD WEAR OR ANY OTHER REPAIRABLE PROBLEMS. *TR