I own a 2009 328i with 91,000 miles. At 80,000 miles, the BMW dealership replaced the front and rear brake pads, rotors, and sensors. It was time for an oil change, so I checked the dealership's service website. It APPEARS I need the brakes serviced every 5-10k miles, but this seems excessive. What do I really need?? With relatively new rotors and pads, how often should I get a brake "service"? And what does that mean- are the brake lines bled every time? I drive 15k miles per year. How often should I return for brake servicing?