Alignment refers to the adjustment of a vehicles suspension system that connects it to its wheels. It is not an adjustment of the tires or wheels themselves. The key to proper alignment is adjusting the angles of the tires, which affects how they make contact with the road. There are three main things that a technician checks when they perform a tire alignment: camber, toe, and caster. Camber is the outward or inward tilt of the tires when viewed head-on, caster is a front or rear tilt when viewed from the side, and toe is the way your tires are pointed when viewed from above. When the wheels are out of alignment, the tires are not at the correct angles and theyre pointing in different directions, causing uneven and accelerated tire wear and making the vehicle pull to the right or left. Alignment can help your tires perform properly, last longer, improve handling, and keep your vehicle from pulling in one direction or vibrating strangely on the road. Alignment issues can be caused by everyday driving, poorly maintained roads, or hitting a curb or a parking bumper. It is recommended to have your alignment checked twice per year even if you dont notice any issues.