The dealer where I bought the tractor tells me that his suppliers no longer sell Ag tires (26x12x12 rear, and 18x8.5x8 front) to fit this tractor. I currently use turf tires year round, but would like to use Ags for snow plowing. Since I want to rotate Ags for plowing with turfs for mowing, I am looking for a set of fully assembled 4 new Ag tires, rims, and valve stems. Anyone know where I can get them? I live in northeastern Ohio. Thanks for your replies.