Why is it important to regularly check the tire pressure in a Audi vehicle?

I recently purchased an Audi and I'm wondering what the recommended tire pressure is and how often I should be checking it. Can someone provide some guidance?

It is important to regularly check the tire pressure in your Audi to ensure better fuel efficiency, longer tire life, and improved handling and safety. The recommended tire pressure for your Audi can usually be found on a sticker inside the driver's side door jamb. It is recommended to check your tire pressure at least once a month or before any long trips.