I have a 4 ton Dempster dry fertilizer spreader, it's hydraulic drive. Works great. Has a good tarp. The spreader portion is hydraulically driven, and the chain apron is ground driven. I also have a new connector that goes from the wheel drive to the apron. I just haven't had time to install it yet.Tires hold air. Not corroded has been reinforced. Chain apron and interior are excellent.