as you may have figure by my last 5 posts. i just bought a 2005 JD 328, and don't know to much about skid steers. currently it has 14x17.5 foam filled tires which are pretty much bald, they seem very wide to me. I have to replace the tires and are not filling them with foam. I was looking at replacing them with another set of 14x17.5 but found that on the JD site they list 12x16.5 under parts. I was wondering what everyone is running and how much of a difference the different sizes will make. I am going to be lifting probably over one ton with the machine. I will also be using it to clear my lot, so i need it to be decent in sand.???????????