I bought an 8820 TII and the wheels were "dished out." I had the dealer switch them from side to side and they fit fine. You might look in your owners manual. I looked at a 9600 a few years ago with 30.5 rubber on it and it wasn't any wider than my 8820 with the 30.5's on it. Make sure you think safety first when switching those tires around. lots of good jacks or blocks and only jack the machine up where JD says its ok to. Good luck.