Wheel Toe Pattern

The Viper suspension system is designed to vary the wheel toe pattern according to the vehicle ride posture to keep the wheels pointed in the proper direction at all times. The four wheel independent suspension alignment must be correct to assure proper road handling. The frame and suspension components are calibrated at the assembly plant and should not require adjustment unless the vehicle has collision damage. This will cover procedures for correcting improper frame, steering gear, and rear toe link alignment that would affect the wheel toe pattern. Before performing the following operations, verify that the front and rear suspension alignment and vehicle height is within specifications.

Wheel Spindle Arc:

Wheel toe pattern is regulated by the vertical positioning of the inner tie rod pivot in relation to the orbital swing of the wheel spindle. Wheel toe settings have no effect on toe pattern. When the suspension is fully compressed and then extended with the tie rod disconnected from the spindle, the spindle makes an arc in space without altering the toe pattern. When the are of the spindle is extended into a full circle and the inner tie rod end is positioned in the center of the circle, the toe pattern cannot change. When the inner tie rod end is raised or lowered from the center of the true circle of the spindle arc, the toe pattern will vary. When the suspension is compressed (jounce), the wheel toe should change from normal riding height. When the suspension is extended (rebound), wheel toe should move in the opposite direction. The front suspension jounce should cause toe-out, rebound should cause toe-in. Rear suspension jounce should cause toe- in, rebound should cause toe-out.