Answer: Disc brakes begin to show wear at approximately 8,000 to 10,000 miles. Many brake pads come with an indicator strip that will make a whistling noise when your brake pad needs to be replaced. However, if you experience any squealing or grinding noises when you step on your brake pedal, you should inspect your brake pads. If you can see excessive wear, you should have your brake pads changed in order to prevent any further damage to your vehicle’s rotors and wheels. At this time also check your rotors and calipers. Calipers may begin to stick and won’t retract all the way when you release your brakes. This can lead to quicker wear on your brake pads. Again, you should always address any noises from your brakes before the problem becomes too serious or dangerous.