Sometimes, your car makes grinding noise when braking. It is a warning sign telling you that there’s something wrong either with the brakes or the rotors. Vehicles can make various sounds and some are normal and harmless. The car has to generate plenty of heat energy through friction every time you push the brake pedal. As a result, the brake pads can wear out over time, causing the damage of rotor and caliper and the brakes to fail. Brakes that fail are never good news because it may lead to major accidents. So, ignoring the sounds will only make the problems worse. All the parts and components of a vehicle are supposed to fail or wear out at some point. However, what is important is to identify the problems before these become serious. Rocks between the rotor and caliper could be the culprit. It is normal for the components to catch dirt, dust, and grime. However, sometimes small rocks or other solid objects from the road can catch between the caliper and rotor and create grinding noise whether you push the brake or not. The frictions created from such an object can damage these parts. It’s natural for these pads to get tattered at some point. When it happens, a metal on metal contact between the backing plate and the rotor gravely damages the later component. The rotor can also rub the caliper and scrape its meal surface. To avoid this, you should do a regular inspection of the brakes and replace the pads when they are worn out. Damaged or worn out friction pads might be the reason of grinding noise. Brake pads have an average lifespan of 20,000 miles. Some may not last that much longer for some reasons. One probable cause is leaving the automobile in your garage for weeks. Idleness and bad weather can cause the forming of rust and corrosion on the rotors. It that case, the rust will spread to other parts too and destroy them. You should drive the car regularly, at least for a while, to avoid this problem. If you do notice an issue with your vehicle, make sure to bring it in as soon as possible so we can inspect it for you.