Bedding Your Pads:
To ensure your new pads will work as advertised, they must be broken in, or bedded. Subjecting new pads to hard service right out of the box will result in poor performance or even damage to the pads and the rotors due to extreme temperature variations between the rotor surface and the body of the pad. Think of the bedding process are a "heat cure"; the new pads are gradually brought up to temperature and then slowly cooled over a period of time.
Here is a widely-accepted procedure for bedding brake pads for your street vehicle. It can be used with any pad type.
Step 1: Make 8 to 10 gentle stops from 30 miles per hour to 15 miles per hour. Allow 20 to 30 seconds between each stop so the brakes can cool down.
Step 2: Make 8 to 10 moderate stops from 45 miles per hour to 30 miles per hour. Again, allow a 20 to 30 second cooldown period between each stop.
Step 3: Make 8 to 10 hard stops from 55-65 miles per hour to 25 miles per hour, allowing 20 to 30 seconds of cooldown time between each stop.
Step 4: You should notice a more positive brake feel during the bedding process. If you notice any significant brake fade during the hard stop phase (Step 3), it may be an indication that the brakes are overheating. Immediately do some light driving without using the brakes to allow the brakes to cool down, then repeat Step 3.
Step 5: Drive at a moderate cruising speed, using the brakes as little as possible, until most of the heat has dissipated from the brakes. Avoid using the brake pedal to hold the car at any stops you make. Park the vehicle and allow the brakes to cool to ambient air temperature.