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For the sake of clarity, most of what I am going to talk about in terms of signs and symptoms apply to Semi-metallic Brake Pad , mainly since your front brakes do about 2/3 of the work, and they will wear out faster and need to be replaced/serviced more often. This is not to say your rear drums won’t wear out — they will. But it happens less often, and they result in less braking degradation when they do wear, and you can just have them changed along with your fronts to be safe.
If you have a car with discs on all four corners, awesome. You can apply this knowledge to front and rear.
And as always, with any automotive advice, if you’re still not sure, ask a mechanic. I’m just a guy who likes cars and works on his own stuff.
If you experience any of the following, you should definitely call your mechanic as soon as possible for an appointment:
Fading or lack of responsiveness: If your brakes don’t seem to have that “bite” they used to, or if the pedal “sinks” toward the floor when you apply a constant pressure, you could have a leak in your brake system. Either air is getting in, or brake fluid is getting out.
Pulling: When you get on the brakes, does your car “pull” to the left or right? Your brakes could be worn unevenly and in need of an adjustment.
Grinding or growling noises: You didn’t pay attention to the indicator noise I talked about above, did you? Grinding/growling noises come from Brake Pad Supplier that are completely worn out, and the metal backing plate of the pad is now rubbing against the rotor. Not only is this extremely dangerous, as you have very little stopping power this way, but your rotors will have to be replaced as well. Get to your mechanic ASAP.
