i changed my brakes 4x because I Door dash 7 days a week, and I go through brakes a lot! especially when im zipping through traffic! I changed the calipers because I was desperate, I didnt know what else would need to be changed, Earlier today I checked the left front wheel, everything seemed normal, took the pads out, and back in, smooth, I noticed the hardware that comes with the brake pads are either too big or too small, and literally sitting 1mm from the rotor. I adjusted the fitment on the caliper bracket, and drove, 30 minutes later the grinding sound is back, but now it coming from the RIGHT side, so this evening I tore the right side apart, the hardware was literally rubbing the inside of the rotor, I adjusted it as much as I could, noticed the brake pads fit much tighter, a little too tight, so I adjusted more, and now I think im good to go, Unforunately during this process, I dropped the ratchet on my phone and broke the F out of my screen, im switching out phones right now and heading back out for the night! I have high hopes this was the issue, makes sense you cant hear it at higher speeds because of engine/road noise and only at low speeds.... but lll keep you guys updated once my phone is done switching everything over! Thx guys!