See also:

Wheel balance
Each wheel was correctly balanced when your vehicle was new, but the wheels will become unbalanced as the tires become worn during use. Wheel imbalance causes the steering wheel to vibrate slightly at ...

State emission testing (U.S. only)
WARNING Testing of an All-Wheel Drive vehicle must NEVER be performed on a single two-wheel dynamometer. Attempting to do so will result in uncontrolled vehicle movement and may cause an accident ...

Confident, Agile Handling and Safety for any Road ... or any Weather
The new Subaru Legacy improves crash-worthiness and provides a stiffer platform for a smoother, quieter ride - but retains the crisp handling and balance Subarus are known for. Legacy 2.5i and 2.5 ...