6, in the process of four-wheel positioning adjustment, sometimes encountered difficult to tune all the parameters to the acceptable range, may adjust a, another will go "gone with the wind"?

Answer: because of all sorts of four-wheel positioning Angle are interrelated, especially after the high dip Angle of the vehicle. Such as: front wheel toe Angle change, the camber Angle will follow the change. If you use a good positioning machine, its software provide some Angle adjustment function, in accordance with the instructions, after the first Angle to adjust camber Angle, the toe Angle adjustment. This will easily tune all the parameters to the acceptable range.

7, why four-wheel positioning done, no one lap?

Answer: the greatest possibility: one is the four-wheel positioning machine is allowed to or measurement operation is not standard. 2 it is the car chassis, important parts such as the ball neck and pull rod wear big talk.

8, in the process of measuring, how can you most likely to eliminate external interference, subjective and objective factors, guarantee the accuracy of the data?