Alignment refers to an adjustment of a vehicle’s suspension – the system that connects a vehicle to its wheels. It is not an adjustment of the tyres or wheels itself. The key to proper alignment is adjusting the angles of the tyres which affects how they make contact with the road.
There are a couple ways to tell if your car needs a tyre alignment. If you've noticed one or more of these indicators, you should have your alignment checked by a licensed service technician immediately.