An alignment machine is clamped onto your wheels. The mechanic then uses a computer to adjust them based on specific and precise measurements based on the information given by the vehicle manufacturer. Another test drive is done to see if your tires were properly aligned. If not, the process will begin again.3D Wheel Alignment is a precision way to recalibrate them. Measuring data from multiple angles, it checks them against the information supplied by the vehicle manufacturer. The car's steering and suspension can then be adjusted to make sure that all four wheels line up as the manufacturer intended.Newer alignment machines feature clamplike devices that are attached to the wheels of the car (which is raised up in the air) and that link to a computer that helps make precise measurements. The mechanic will also take this opportunity to make sure that no suspension components are excessively worn or broken.