How to maintain the optimal tire pressure for a BMW 4 Series?

I recently bought a BMW 4 Series and I want to make sure I am maintaining the optimum tire pressure for better performance and fuel efficiency. What are some tips to achieve this?

First, always check your tire pressure at least once a month or before a long trip. The recommended pressure for your BMW 4 Series can usually be found on a sticker inside the driver's door.

Make sure to check your tire pressure when the tires are cold, as heat can cause the pressure to rise and give you a false reading.