Why is my Audi A5's steering wheel shaking?

I've noticed that my Audi A5's steering wheel shakes when I'm driving at high speeds. What could be causing this? Is it a safety concern?

There could be a few reasons for this. One possibility is that your tires are out of balance. Another possibility is that your wheel bearings are worn out. It's important to have this checked by a mechanic as it can affect the handling and safety of your vehicle. I recommend bringing it in for a diagnostic as soon as possible.