4730 2011 John Deere 4730, Self-Propelled Sprayers, 320/90R46, 520/85R38. 100†boom, 2†fill, auto air level, three sensor boom trac, 2600/ITC/SF1/swathpro, less traction control, manual tread adjust. Factory build codes show no boomtrac and auto air spring adjust. Both options were field installed