I have ordered from Sloan a few times, unfortunately my last order about 5 years ago didn't go well and I don't think I have ordered since. Closing wheel tires were a great price I ordered them, they went back order, when they arrived late (from China) they were so poor quality I couldn't use some of them and the ones I did use didn't last long. I'm sure the guy that bought the planter the next year wondered why all the closing wheel tires were falling apart, at least the ones I didn't change out. I still have a couple new defective tires if you would like to see them. When I bought them I didn't know I was comparing price of USA made tires to price of China made tires, that part was my biggest complaint.