For 1990-2009 cars

The camber is the inward or outward tilting (2) of the front or the rear wheels from the vertical (1). When the wheels tilt outward at the top, the camber is positive, and when they tilt inward at the top, the camber is negative. The amount of tilt is measured in degrees from the vertical and this measurement is called the camber angle.

An excessive positive camber will cause outside shoulder wear on the tires. An excessive negative camber will cause inside shoulder wear. Excessive camber will also cause the vehicle to pull or to lead to the side having the most positive camber.