Here's What We Do:

For vehicles with non-adjustable rear suspension:

1. Alignment angle readings are measured at all wheels.

2. The steering wheel is centered.

3. Adjustable front wheel alignment angles are referenced to the rear thrust line and set to the vehicles manufacturer's specification.

Result: All four wheels are positioned straight ahead and parallel, and the steering wheel is centered.

For vehicles with adjustable rear suspension:

1. Alignment angle readings are measured at all wheels.

2. Adjustable rear alignment angles are set to the manufacturer's specification. (Rear thrust line corresponds to vehicle centerline.)

3. Steering wheel is centered.

4. Adjustable front wheel alignment angles are referenced to the rear thrust line and set to the manufacturer's specification.

Result: All four wheels are positioned straight ahead and parallel, and the steering wheel is centered.

This Can Happen to any Vehicle:

On this vehicle, the front wheels are not aligned to the rear thrust line. This can happen from the normal wear and stress, whether your vehicle has adjustable or non-adjustable rear suspension.

To travel straight ahead, you would have to steer the front wheels slightly to the right.

A common result would be that the vehicle would "dog track" and possibly "pull" to the side.

Of course, the angles are exaggerated so you can easily see the condition. It takes only a small amount of misalignment to create handling problems and cause rapid tire wear.