What is an aligner?

Answer 1

Alignment: alignment is positioning of the steered wheels to achieve directional stability during straight ahead position, perfect rolling condition on steering and recovery after completing the turn. Basic factors or angles involved in an alignment are suspension height, caster, camber, toe-in, toe-out, Steering axis inclination (SAI) and turning radius. It is also referred as a wheel alignment.

There are three more factors which are affect alignment are thrust angel, scrub radius, set back.

All these factors affect steering effort, ride quality, steering stability and tire wear.

Here are the indications that car may need an alignment

1. Uneven or improper tire tread wear.
2. Your car pulls or drifts to one side.
3. Your steering wheel does not return easily after a turn (Poor returnability).
4. Excessive play in steering.

When you go for wheel alignment of your car it consists of adjusting the angle of your wheels so that they are perpendicular to the ground and parallel to each other or to the manufacturer's specification. Proper wheel alignment reduces tire wear, improves fuel economy and handling. So you need to do the wheel alignment every 7000-10,000 miles.

In regular wheel alignment adjustment of toe-in and toe-out is required.

In case of any accident or any major case it is required to do full wheel alignment which consists of adjustment of all angles.

Answer 2

An aligner is a person, thing, or condition by which something is aligned.