Which effect is associated with excessive camber?

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Camber is the tilt of the wheel relative to vertical, and it determines how much of the tire’s tread actually stays in contact with the road through the steering and in straight-line driving. When camber is excessive, the tire’s contact patch becomes uneven, so one edge carries most of the load. With excessive negative camber (top of the tire leaning inward), the inner edge wears out faster; with excessive positive camber, the outer edge would wear more. In either case, the strongest, most noticeable effect is tire wear, especially on the edge that is carrying the load. This misalignment can also hurt straight-line stability and overall tire life, and it doesn’t improve fuel efficiency or reduce steering effort.