Since the car was invented it has been important that all four wheels point in the same direction!
Over time as the car and its components have evolved, so has the way cars steering and suspension set up or geometry is measured.
The modern car is built for comfort, performance and handling. In order to achieve and maintain the best ride possible, the steering and suspension needs to be measured and adjusted within the motor manufacturer’s specifications. This can only be done by measuring all four wheels and having a proper full four wheel alignment measurement.
If only the fronts are set straight, through having a Tracking, two wheel alignment, or Toe & Go, and the rear wheels remain out of alignment (and not adjusted), your car could still suffer tyre wear, pulling and crooked steering wheel.