This SAE Recommended Practice establishes consistent test procedures for determination of steady-state directional control properties for passenger cars and light trucks with single axles. These properties include the gradients with respect to lateral acceleration of steering wheel angle, understeer/oversteer, sideslip, roll angle, and steering wheel torque; the gains with respect to steering wheel angle of yaw velocity, lateral acceleration, and sideslip; the characteristic speed or critical speed; and the total, steering, and tire compliances at the front and rear wheels.
SAE J266-1996 Referenced Document
ISO 4138:1982 Road vehicles; Steady state circular test procedure
ISO 7401:1988 Road vehicles; lateral transient response tests methods
ISO 8855:1991 Road vehicles; vehicle dynamics and road-holding ability; vocabulary
SAE J2181-1993 Steady-State Circular Test Procedure for Trucks and Buses