How do I fix a flat tire on my Audi A8?

My Audi A8 has a flat tire and I am not sure how to fix it. Can someone give me step by step instructions on how to fix it properly?

First, make sure you have all the necessary tools in your trunk to change a tire. This could include a jack, lug wrench, and spare tire. Next, locate the flat tire and loosen the lug nuts with the lug wrench. Then, use the jack to lift the car off the ground and remove the lug nuts. Carefully remove the flat tire and replace it with the spare. Tighten the lug nuts and lower the car back to the ground. Finally, make sure to get your flat tire fixed or replaced as soon as possible.