We call them 'Farm Duty', and we know that means 'Heavy Duty so AUTO-TRAC Steerable Manure Tankers share many of the features found in our Commercial Series tankers. The full-length independent trailer means that the towing forces are not carried by the tank body...less stress is always good. The tank may be easily repositioned to adjust the hitch load when injectors are added. Fields stay in much better condition as the AUTO-TRAC steering lets the tanker follow an easy, natural turn instead of sliding through corners and churning up the headlands. AUTO-TRAC steering also operates at high speed, making road work safer and extending tire life. AUTO-TRAC tandem undercarriages run on a simple walking beam suspension that divides the load 60/40 on the tires and the same massive Industrial Brakes used on Commercial Series tankers provide plenty of stopping power. Choose from 23.1 x 26 or 28L 26 standard tires, or 800/45 x 26.5 flotation tires for sensitive soils.