Why is my Audi A8 shaking at high speeds?

I recently purchased a used Audi A8 and have noticed that it shakes violently when I reach high speeds on the highway. Can anyone provide some insight into why this might be happening and what steps I can take to fix it?

There could be multiple reasons for your Audi A8 to shake at high speeds. It could be due to unbalanced tires, worn out suspension components, or even a faulty wheel bearing. It's best to have a mechanic inspect your car to determine the exact cause and provide a solution.