What does an alignment check primarily evaluate?

An alignment check primarily evaluates the angle of the wheels relative to the vehicle's body. This is crucial because proper wheel alignment ensures that all four wheels are positioned correctly in relation to each other and the road. When the angles—such as camber, caster, and toe—are within manufacturer specifications, it promotes even tire wear, enhances vehicle handling, and improves fuel efficiency. Misalignment can lead to excessive tire wear and adversely affect the vehicle's steering response, making it essential to routinely check alignment, especially after suspension work or if the vehicle exhibits handling issues.

While other aspects, such as the tread condition of the tires, the wear on brake pads, and the stiffness of suspension components, are important for overall vehicle maintenance and safety, they are not the primary focus during an alignment check. Instead, the alignment check directly assesses the geometric positioning of the wheels, which is fundamental for optimal vehicle performance.