TWO ROAD CREW FARM TIRES 18.4x38 R-1 16 PLY DEEP AGGRESSIVE TREAD thorn and flat resistant 16 PLY rated tractor lug tires, MAX LOAD: 7826 LBS, OD 69” TUBES INCLUDED (2 TIRES + 2 TUBES INCLUDED) MADE IN VIETNAM. The original 45 degree long bar tread gives tremendous improvement in traction over the long/short bar tread.