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What Is a Thrust Angle Alignment? | eHow

Specialty Products Company 63020 2.5" Thrust Alignment Plate

$177.55


Learn About Thrust Angle and Vehicle Alignment

A setback and thrust angle misalignment could be an indication of frame damage. If the vehicle has suffered a recent collision that was offset, the frame may be suffering from a condition known as a “diamond frame.” This occurs when one side rail shifts in relationship to the other side rail. On a vehicle with an independent front suspension and a rear live-axle, the shifted rails will cause the front suspension to have an increased setback and thrust angle. This is caused by the mounting points of the suspension moving.

On all vehicles with four-wheel independent suspensions, or front-wheel drive vehicles with adjustable rear suspensions, the appropriate alignment is a four-wheel alignment. This procedure “squares” the vehicle like a thrust angle alignment, and also includes measuring and adjusting the rear axle angles as well as the front.

Thrust Angle and Vehicle Alignment

A vehicle's thrust angle affects its steering wheel position

The thrust angle of a car reflects the angle of its rear tires in relation to its center line. A thrust angle alignment corrects the problem by realigning the rear axle to be perpendicular with the center line and parallel with the front axle.

A setback and thrust angle misalignment could be an indication of frame damage. If the vehicle has suffered a recent collision that was offset, the frame may be suffering from a condition known as a “diamond frame.” This occurs when one side rail shifts in relationship to the other side rail. On a vehicle with an independent front suspension and a rear live-axle, the shifted rails will cause the front suspension to have an increased setback and thrust angle. This is caused by the mounting points of the suspension moving.