The "Tall Spindle" raises the upper ball joint a designated amount. This new, higher position of the outer pivot of the upper control arm changes the arc that it swings in, which actually pulls the top of the tire in a designed amount, thus the "positive" camber change. Positive camber change tilts the top of the tire inward during compression and cornering. Since the car itself usually tilts outward slightly during cornering, the inward tilt of the tire will offset that and keep the tire perpendicular and the tire patch evenly planted on the pavement. Combine this revelation with Heidt's new tubular control arms-a much stronger, higher-performance design, and you've got an awesome handling combination.