Last fall, I purchased a brand new set being auctioned. Mine are a little larger. I'm going to make a wheel spacer to adapt the Yanmar hub to the JD rims. I still will need to get some fronts, but I've been too busy digging post holes to get them on. I think mine are 16" rims, I can check on the tire size, but they were 199 including shipping.
Cheers,
Rob