Thanks Notiones. My husband thinks it is the way he has them attached and has plans to redo. We did purchase the wheels from Harbor Freight and they were the least expensive of everywhere we checked even with shipping, plus....they were on sale!
Notiones....What size bolts did you use for the tires? We have done this and although it works well, the tires bow out and we're thinking the bolts are the wrong type. We have finished the tractor and placed the girls in it. This site has been so helpful to us. A big thank you to all.