Some cheap pads will squeal. You may need to change to an OEM type pad. It can also be you did not apply a anti-squeal high temperature grease to the back of the pads where they contact the caliber. Teflon coated shims are another option. Be sure and also check the slide pins to make sure they are not rusted. Apply a slight amount of high temp grease to these pins or replace if they are rusted.
Probably the quality of the brake pads. Do u know what kind?
Something was installed incorrectly.
No! Something is wrong.
probably, if the pads are worn, or the rotors \ drums are scarred, there will be a grinding noise, plus you should be able to feel it through the brake pedal. most modern brake systems have quealers on the pads to tell you when they are getting worn and should be replaced. If you have a disc brake system, you should be able to inspect the rotors quite easily. Look for gouges in the surface of the rotor. If they are badly gouged, they should be turned or replaced.
Brake rotors wear just as brake pads do and when they wear down beyond minimum specs they become unsafe. Good brakes are a # 1 priority.
If they are warped, they need to be turned, if they are groved, they need to be turned. If they are glazed, they need to be turned. In general, if you are working on the brakes, they need to be turned.If they are too thin (not wide enough across) to be turned, they need to be replaced. Many newer rotors are not thick enough to be turned, so you just replace them every time you replace the brakes. Most auto parts retailers will measure the thickness of the rotors for you and tell you if they can be turned.
The rotors in disc brakes and the drums are what the pads and shoes rub against to stop a car. With use, the surface can get grooves in it or a build up of rust scale; reducing the braking efficiency. To machine the rotors and drums, they are put on a lathe that cuts a new smooth surface on the face of each. Depending on wear, any given rotor or drum can probably be turned 2 or 3 times before needing to be replaced.
check the guard behind the rotors could be rubbing
your brakes are probably sticking and either they need to be replaced or your rotors are bad if its not one of those two it could be somthing as simple as the caliber was put on the rotor crooked or the caliber is warped whicch is very rare so most likely you brake to hard and your rotors are wearing unevenly
Maybe it's coming from the rear brakes.
It depends on where the grinding noise is coming from. Most of the time the grinding is coming from the brakes and the brake pads need to be replaced. If they've been grinding for a while, the rotors will need to be resurfaced or replaced. Other possibilities for grinding are worn axle bearings, or a problem with the clutch. If the clutch goes out, there will be a grinding noise when you try to shift gears.
I had a similar experience with my Windstar - lots of pad material left, but still grinding after new pads & shoes. Turns out the rotors were bad. :( Btw, I just replaced the rotors without finding out if a simple turning would have eliminated the grinding.
this could have MANY answers, but the most common is worn out brake pads rubbing against the rotors.
No! Something is wrong.
Grinding
The grinding noise is from the the pads being gone and rotors being grinded away. Unless it was just some rust on the rotors from sitting for days.
if you did not clean off the rotor of the oil they put on it that is why you have this sound, if not check your caliper slides and make sure it is not frozen, and make sure you do not have a twisted brake line. if it is more of a grinding noise and kinda sounds gritty (even when not braking) i would check your wheel bearings
If it happens right when you are stopping or coming to a slow stop, it is probably your discs cutting into your rear rotors. You need to get them replaced ASAP.
Did you have the rotors turned or replaced? If the rotor surface was not resurfaced it can often cause noise, premature wear and uneven stopping.