2 Deestone D405B, 23X10.50-12, 100A3, 6 Ply. 2 tires carlisle farm specialist f-2 7.5l-15 load 6 ply (tt) tractor the farm specialist f-2 prevents field retention by minimizing the pressure placed on the driving surface with its high flotation ability. Manufacturers only provide the width and rim diameter with these tires.