What Is Tire Alignment?
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 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.
How Do I Know If I Need Tire Alignment?
There are a couple ways to tell if your car needs a tire alignment. If you've noticed one or more of these indicators, you should have your alignment checked by a licensed service technician immediately:
Uneven tread wear
Vehicle pulling to the left or right
Your steering wheel is off center when driving straight
Steering wheel vibration
Are Alignments Necessary?
An alignment improves driving safety by keeping the right amount of the tire in contact with the road and preventing your vehicle from pulling to the left or right. A properly aligned vehicle has a smoother ride and optimal gas mileage. Keeping the wheels aligned also extends tire life.
What Are The Types Of Alignment?
Your technician will advise what kind of alignment is best for your vehicle type:
Known as a front-end alignment, the front wheels are adjusted so they are parallel to the centerline of your vehicle. This is the simplest and most basic alignment BUT it’s not recommended for any current model vehicle. It’s less accurate. You may not get a centered steering wheel, because front-end alignment doesn't account for rear wheel angles.
A thrust alignment is the most accurate alignment for vehicles without adjustable rear suspension. Only the front wheels are adjusted. Here’s how: There’s no guarantee both rear wheels are pointed straight ahead as they should be. One may be pointed exactly forward and the other slightly off. Or both their angles could be off. Since this can’t be adjusted, the front wheels are aligned as closely as possible to the thrust line, which is the average of where the two rear wheels point. This compensates enough to get a centered steering wheel.
This is done on vehicles with adjustable rear suspension, to bring all four corners of your vehicle back in spec. All four wheels are aligned to the center of the vehicle. First, the rear axle angles are measured and adjusted, then the front. This is the best, most accurate, manufacturer-recommended alignment for vehicles with adjustable rear suspension.