Radial Tire Inflation Pressure, MF-2027 Click on the image above to download a complete copy of this publication in PDF format. Download a free copy of the Adobe Acrobat Reader. Achieving maximum tractor performance requires optimizing tire inflation pressure.
Overinflated tires have smaller footprints and produce less traction.
However, underinflated tires have decreased durability and life. Although both cases are detrimental, the majority of Kansas tractors have tires overinflated by 5-8 psi. Overinflating tires 6 psi will significantly reduce tractive performance. The tire must have optimum ground contact to transfer power effectively. Figure 1 illustrates the effect of reducing rear tire inflation pressure on a 150 PTO Hp MFWD tractor operating on disked soil.