Magnum V8-5.7L VIN H (2005)
Dynamic toe pattern is the inward and outward toe movement of the front and rear tires through the suspension's jounce and rebound travel. As the
vehicle's suspension moves up and down, the toe pattern varies. Toe pattern is critical in controlling the directional stability of the vehicle while in
motion. Front and rear dynamic toe pattern is preset by the factory at the time the vehicle is assembled.
It is not necessary to check or adjust front or rear dynamic toe pattern when doing a normal wheel alignment. The only time dynamic toe pattern needs
to be checked or adjusted is if the frame of the vehicle has been damaged.
STEERING AXIS INCLINATION (S. A. I.)
Steering axis inclination is the angle between a true vertical line starting at the center of the tire at the road contact point and a line drawn through the
center of the upper ball joint (or strut) and the lower ball joint (1). S.A.I. is built into the vehicle and is not an adjustable angle. If S.A.I. is not within
specifications, a bent or damaged suspension component may be the cause.
INCLUDED ANGLE (I. A.)
Included angle (3) is the sum of the S.A.I. angle (1) plus or minus the camber angle (2), depending on whether or not the wheel has positive or
negative camber. If camber is positive (2), add the camber angle to the S.A.I. angle. If camber is negative, subtract the camber angle from the S.A.I.
angle. Included angle is not adjustable, but can be used to diagnose a frame misalignment or bent suspension component (spindle, strut).
THRUST ANGLE
Thrust angle is the averaged direction the rear wheels are pointing in relation to the vehicle's center line. The presence of negative or positive thrust
angle causes the rear tires to track improperly to the left or right of the front tires (dog tracking).
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Negative thrust angle means the rear tires are tracking to the left of the front tires.
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Positive thrust angle means the rear tires are tracking to the right of the front tires.
