On every car it has always been important that all four wheels point in the same direction!
Over time the car and its components have evolved, therefore it’s important that the way a car’s steering and suspension set up or geometry is measured has evolved too.
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 or two wheel alignment, and the rear wheels remain out of alignment (and not adjusted), your car could still suffer tyre wear, pulling and a crooked steering wheel.