How to troubleshoot vibration issues in Audi 80?

I noticed that my Audi 80 has been experiencing excessive vibration while driving, especially at high speeds. I've checked the tires and they seem to be in good condition. What steps can I take to troubleshoot and fix this issue?

First, check the alignment of your wheels and make sure they are properly balanced. If that doesn't solve the issue, it could be a problem with your suspension system. It's best to take your car to a certified mechanic for inspection and repairs.

You may also want to check the engine mounts as they can cause excessive vibration if they are worn out or damaged. It's a relatively simple and inexpensive fix that you can do yourself.

If the vibration only occurs when braking, it could be an issue with your brake rotors. They may be warped or worn out, which can cause uneven braking and vibrations. It's best to replace them as soon as possible for safety reasons.