Brakes grinding noise

Hello,

Just to clarify, did you have this noise before replacing the pads?
Also, the bolt that you replaced was it one of the slide bolts or just the smaller standard bolt?

If you had this grinding issue before, it is likely that the caliper is sticking. If the caliper does not release all the way the pads will be in contact with the rotors, and you will hear the grinding noise.
This can be due to a faulty caliper piston or a restrictive brake hose to the caliper.


Let me know what you are experiencing.
Thank you.

https://www.2carpros.com/articles/how-to-replace-front-brake-pads-and-rotors-fwd

Could you tell me how I would check for a faulty caliper piston, or the brake hose? It was just the standard bolt that held the whole caliper in place, and it did start grinding before I changed the brake pads and rotors.

So, it did the grinding before, as you were just driving down the road?

Usually, they brakes will overheat when the caliper sticks, as the friction of the pads across the rotors creates good amount of heat.
So really you will have to look for excess heat and noise to figure out if the caliper is sticking. In most scenarios the reason for the caliper to stick is a bad hose. Keep in mind if the caliper(s) have been overheating for an extended period of time, the heat will damage the internals and the caliper will need to be replaced.

Yeah, I was about ten minutes from my house, and it started grinding and every time. I thought I had it correct and test it still the same thing.

So, my piston on my passenger side the metal ring part is damaged a chunk is missing from that metal ring. would that be what's causing it to grind? I know from putting my calipers back on that the sliding pins aren't seized up.

That could be it. Can you upload a picture?

So obviously this isn't mine, but the white shape is where the piston ring is damaged at the top of that ring its missing metal right there.

I didn't even think to get a picture of it when i had the tire off if you need a real picture of it, I can do that as well I just put the tires back on and everything incase i had to drive it.

Unless the seals around the piston is broken/damaged, having a chunk broken on the face of the piston may not cause the grinding noise as you drive without any brake being pressed.
Did the seal look to be damages around the piston?

No, it wasn't at all that was the only thing I noticed.

When the brake hose collapses in the inside it can become harder to bleed, when comparing to the other side.
This might be too basic, but make sure that the anti-rattle clips are secured for the pads.