It makes sure the wheels and tires are aligned with each other. When all four wheels are properly aligned, the tires work together more effectively. This results in better handling, better steering wheel return, better fuel economy (because the tires are not being dragged sideways as they are when misaligned).


You need to wheel alignment when you change the suspension system for it cause camber and related angle have change, so you need to align for 4 wheels, or it will cause the more wear on tires , poor driving handling and waste of fuel.