WHILE PULLING THE TRAILER AT 55 MPH THE CONSUMER FELT VIBRATIONS IN THE VEHICLE. THE TRAILER JACKED KNIFED, FLIPPED OVER, AND SEPARATED FROM THE TOWING VEHICLE. THE TRAILER DID MINOR DAMAGE TO THE TOWING VEHICLE. THERE WERE NO INJURIES. CONSUMER EXAMINED THE TRAILER AND FOUND THAT TIRE TREAD SEPARATED CAUSING THE COLLISION. *AK NM