These fine nylon cord tires with rib tread design are rigidly tested to meet FAA Standard TSO-C62. Air Trac tires are original equipment on many of today's aircraft & offer great performance in an economical tire. Air Hawk are premium grade aircraft tires,cost more but provide longer service life. Performance, construction, and safety you can count on from Specialty Tires. Compare prices and get the best savings and faster service from Aircraft Spruce.