Vehicle category; light trucks.system: tires; cooper super road master 78, super RS 78, hercules hercumile 78,size h78-15lt.consequences of defect: continued use could result in rapid loss of air fromthe tire, loss of vehicle control and, possibly, an accident.note: tread separation may be detected by a bulge in the tread area or by athumping vibration during vehicle operation. Prior to tire replacement, owneris advised to maintain proper air pressure to lessen the chance of failure.dot ID numbers: ut7dccc379 through 419, ut7dbcw399, ut7dbcw409, ut7dhdu379through 419.