Proper alignment affects safety, handling and economy. An important part of vehicle safety is directional control. Does the vehicle travel straight down a highway? Does it steer easily? Are the tires subject to excessive premature wear? Does the steering wheel return to the straight ahead position after turning a corner? For the answer to be YES to all these questions, the vehicle must be properly aligned. The purpose of wheel alignment is parallel rolling of the front and rear wheels and to center your steering wheel.