Why is my Audi A6 shaking while I'm driving?

I've noticed that my Audi A6 starts shaking whenever I reach a certain speed while driving. What could be causing this issue and how can I fix it?

It's possible that your wheels may be out of balance. This can be fixed by taking your car to a mechanic and having them balance the wheels.

Another possibility is that your tires are wearing unevenly. This can be caused by a misalignment or lack of tire rotation. Bring your car to a mechanic to have the tires checked and rotated if necessary.