This SAE Recommended Practice describes a test method for determining the vertical force and deflection properties of a non-rolling tire and the associated contact patch length and width. The method applies to any tire so long as the equipment is properly scaled to conduct the measurements for the intended test tire. The data are suitable for use in determining parameters for road load models and for comparative evaluations of the measured properties in research and development.
SAE J2704-2005 history
2018SAE J2704-2018 Tire Normal Force/Deflection and Gross Footprint Dimension Test
2017SAE J2704-2017 Tire Normal Force/Deflection and Gross Footprint Dimension Test
2010SAE J2704-2010 Tire Normal Force/Deflection and Gross Footprint Dimension Test
2005SAE J2704-2005 Tire Normal Force/Deflection and Gross Footprint Dimension Test