High-speed stability and low speed steering efforts are balanced by caster settings. If you increase your positive caster, you will increase low speed steering efforts and improve high-speed stability. The amount the tire is tilted away from the vertical is camber. When set properly, camber will allow the tire to function optimally without putting too much of its force on the inner edge while moving in a straight line. Tire wear and handling are affected by camber.
Negative camber is when the top of the tire leans toward the center of the vehicle.
Decreasing negative camber gives very even wear, but will normally reduce cornering abilities. A tire has positive camber when the top of the tire is leaned outward from the center of the vehicle. The camber angle should be adjusted so that the tire is vertical under cornering load. Toe is the difference in distance between the front and the rear of the tires. Toe-out is the term used to describe the event that the distance is greater between the front than in the rear.