Why does my Audi A4 start to shake at high speeds?

I've noticed that at speeds above 60 mph, my Audi A4 starts to shake and vibrate. I've recently had the tires balanced and aligned, so I'm not sure what the issue could be. Any ideas?

Check your wheel bearings. They could be worn out or damaged, causing the shaking at higher speeds. It's important to get them replaced as soon as possible to prevent further damage and ensure your safety on the road.

It could also be an issue with your suspension system. Over time, the shocks and struts can wear out and cause shaking at higher speeds. I would recommend having a professional inspect your suspension to determine the root cause.

Another possibility is that your wheels are out of balance. Even if they were recently balanced, it's possible that one or more of the weights have fallen off or shifted. I would suggest getting them rebalanced to see if that resolves the issue.