You may not want to hear this, but I had the same problem with my replacement front disc pads a few years ago with a Jeep dealer for my 2000 Wrangler. Metallic and loud. Called to complain. Mechanic said it's normal and should go away after a while. 1000 miles later, the noise did in fact go away. Yes, the noise was a nuisance. Just my 2 cents. Derek.