<font color="blue"> I have heard that steel wheel on tractors today has something to do with religion, Amish-Mennonite??? </font>
Yep, Mennonite. The Amish don't use tractors. I think it has to do with avoiding becoming too worldly. There are quite a few different sects with many different ideas about how to live a good life. Outwardly we notice different styles of dress and types of vehicles and ways of doing business.
Makes life interesting to live in this area.