The brake system is probably the most important system in your vehicle. Brakes are a normal wear item for any car, so sooner or later they're going to need replacement. You never want your brakes to get to the "metal-to-metal" point, which usually means expensive rotor or drum replacement. If your car exhibits dragging brakes, squealing brakes, a pulsating brake pedal (with ABS not functioning), grinding brakes, a low brake pedal or pulling when braking, have it checked out by a qualified technician as soon as possible.