Location Matters.
Traffic is worse in crowded areas. Busy roads cause frequent stopping, starting, slowing and swerving, which can add extra stress on your brakes. Because of this, your brakes will probably need servicing sooner than a vehicle used in less congested areas.
A good rule-of-thumb is to have your brakes checked whenever you rotate your tires-probably every six months. It's a good idea for more aggressive drivers to check their brakes more frequently, with every oil change, for example. In the meantime, it's important to pay attention to possible warning signals from your brakes between your regular servicing intervals.