PE00-020, FIRESTONE WILDERNESS TIRE TREAD SEPARATION; WHILE DRIVING BETWEEN 70-75 MPH TREAD ON THE REAR TIRE ON DRIVER'S SIDE CAME OFF, WHICH CAUSED A CRASH. EXPLORER WAS TOTALLED IN THE CRASH. DRIVER WAS THE ONLY PERSON WHO SUSTAINED A SHOULDER INJURY. FIRESTONE ATX TIRES WERE ON THE TRUCK. PLEASE PROVIDE ANY FURTHER INFORMATION.*AK