How can I change the tire size on my Audi A3?

I recently purchased new tires for my Audi A3, but realized they are the wrong size. Is it possible to change the tire size on my car, and if so, how should I go about doing it?

First, check your owner's manual to ensure the new tire size is compatible with your Audi A3. If it is, you can change the tires yourself by following these steps: 1. Loosen the lug nuts on the wheel with the flat tire. 2. Lift the car with a jack and remove the flat tire. 3. Install the new tire and tighten the lug nuts. 4. Lower the car and check the tire pressure. For added safety, you may also want to have a professional mechanic change the tire.