Tire Sidewall problems of the 2002 Dodge Ram 2500

The contact owns a 2002 Dodge 2500 diesel. The vehicle had cooper discoverer atr tires, line size lt265/75/r16, dot number 3dw8c8c0609. The contact was driving 65 mph when the rear passenger tire failed. The thread separated from the sidewall of the tire, damaging the wheel rim. The manufacturer was contacted and advised the contact that the tire was not under recall. The vehicle was not repaired. The failure and current mileage was 88,000.