How often should I replace the brake pads on my BMW Z4?

I've noticed my BMW Z4 has been making a squealing noise when I brake. How often should I replace the brake pads to prevent damage and maintain optimal performance?

It's recommended to inspect your brake pads every 10,000 miles and replace them when the thickness reaches 3-4mm. However, if you notice any unusual noises or increased stopping distance, it's best to have them checked immediately.

I've found that replacing the brake pads every 30,000 miles has worked well for me. However, you should always follow your vehicle's maintenance schedule and have the brakes checked at least once a year.