The negative toe-in means that the wheel moves outward, as shown in Fig. 2-5. Fig. 2-5 The toe-in is designed to ensure a parallel roll of the wheels. The toe-in can also complement the little excursion of the wheel supporting system during driving forwards. Only with a proper toe-in can the wheels run in parallel on the road surface. (4) Thrust angle: The front wheels direct or steer the vehicle while the rear wheels control the same rut. The rut is related with the thrust angle which is the angle between the rut of the rear wheels and the center line of the vehicle body (as shown in Fig. 2-6). Fig. 2-6 (5) Wheel alignment parameters standard, Table 2-1.
Table 2-1 107 Name Idle load Full road Front wheel camber angle 0°38′±30′ -0°55′±30′ Front wheel toe-in -2-2 -2-2 Kingpin inclination angle 11°15′±45′ 10°30′±30′ Kingpin caster angle 3°00′±30′ 4°00′±30′ Rear wheel camber angle 1°50′±30′ -1°55′±30′ Rear wheel toe-in -2-2 2-6