Front end alignment is a type of alignment that involves alignment of the front wheels so that they are well aligned with the suspension as well as the ground and this is in order to have control over the steering of the car and also minimize the tire wear. This narrow procedure demands special and in some cases, costly tools thus necessitating the involvement of a qualified technician to carry out the adjustment. It is good to know the fundamentals of wheel alignment and be able to negotiate with the service person. Toe-in is the inward bend of the wheels in such a way that they roll parallel, so that a car with zero toe-in is specially those with the front and rear edges of the wheels at the same distance. Toe-in adjustment is achieved by changing the position of tie-rod ends which can cause unequal wear on tires in case the toe-in is not adjusted. Camber is the tilt of the front wheels other than the vertical, and positive camber represents an outward tilt at the top, and negative camber represents an inward tilt. The camber angle which is in degrees affects contact of tires tread with road and adjusts to variations in suspension geometry as the tires make a turn or when using an uneven surface. The tilt of the top of the front steering axis is called caster; positive caster is tilted rearward and negative caster tilted forward; the correction of camber and caster is performed by reinstalling the upper mounting block of the strut through its mounting holes.