How can I fix the steering wheel vibrations in my Audi A6?

Recently, I've noticed that the steering wheel of my Audi A6 starts to vibrate whenever I drive at high speeds, especially on the highway. What could be causing this issue and how can I fix it?

It could be due to unbalanced tires. Have a mechanic check the tire pressure and balance them if necessary. This should solve the problem.

Another possible cause could be worn out suspension components. Have a professional inspect the suspension system and replace any worn parts. This should improve the steering wheel vibration.

Check the alignment of your wheels. If they are misaligned, it can cause the steering wheel to vibrate. Have a mechanic perform a wheel alignment to fix this issue.