Camber angle is a critical wheel alignment setting. It is the tilt of the tires relative to the vertical axis when viewed from the front of the vehicle. If the top of the wheel tilts inward toward the engine, it is negative camber. If it tilts outward away from the car, it is positive camber. Correct camber ensures the tire tread stays flat against the pavement when the vehicle is loaded or cornering, maximizing traction.
Incorrect camber will destroy tires quickly. If camber is too negative, the inner shoulder of the tire tread will wear down to the steel cords. If it is too positive, the outer shoulder will wear down. Camber shifts out of spec due to worn control arm bushings, sagging springs, or bent struts.