How can I improve the stability and handling of my Audi A4?

I've noticed some issues with my Audi A4's handling and stability, especially at high speeds. What are some steps I can take to improve its performance in these areas?

One thing you can do is to regularly check and maintain your tire pressure. Underinflated tires can greatly affect your car's stability.

Additionally, consider upgrading your suspension system or investing in performance tires for better handling on the road.

Another factor to consider is the weight distribution of your car. Try to evenly distribute weight when loading your car, as this can impact its stability.