I bought a used Kioti RFM over the weekend. It is a 72" KMR 03-72. It only needed 1 wheel replaced due to a bearing going out. At anyrate I may try to replace all of them and just be done. After calling all of the tractor dealers in my area no one wants to look up the part or give a price on replacement including my Tractor Supply. I believe it is made in Italy by Sicma. Is there a site etc. that has a good price on these?