I changed my calibers and now I have a grinding noise in the brakes. I tightened the wheel bearing but it came back.
Most likely the brake dust shield got accidentally bumped and it is rubbing against the brake rotors. A close inspection of all moving parts will be needed. If this only occurs when the brakes are applied, you may need to remove the calipers and inspect there. If the noise was there before you installed the calipers and it went away when you tightened the bearings, there may be an issue with the bearings.