Wheel Bolts problems of the 2005 Ford Explorer

Tl the contact owns a 2005 Ford Explorer. The contact stated that while attempting to accelerate from a stop light, the rear driver's side wheel detached from the vehicle and rolled away from the vehicle into oncoming traffic. The vehicle was towed to an independent mechanic who determined that four of five wheels studs had sheared off. The wheel studs were replaced however, while driving later the failure recurred. The cause of the failure was not yet determined. The manufacturer and local dealer were not notified of the failure. The failure mileage was 165,000.