Tracking is an across the axle check of total toe. With the tracking gauges touching the edge of the wheel rim the operator peers through a ‘scope’ or views a light/laser beam on a scale. With no allowance for run out compensation the reading taken will at best be approximate. So for tracking – we have one angle measured approximately. Four Wheel Alignment will give a minimum of 12 angles measured, all referenced to the car wheel centreline and displaying these alignment angles and comparing them to the factory alignment data. Allowance is made for wheel rim run-out. We will have accurate repeatable readings that will allow the full picture of how the vehicle drives and whether undue tyre wear will occur. Adjustment would involve the steering wheel being set straight and adjusting the individual toe to maintain a straight steering wheel while the car is driven.