So in the last year I have had to remove these pads at least 5 times to re-grease the pad guides and tabs as they start to squeak every 2-3 months. I used Sil-Glyde and then Permetex Extreme Ceramic Lube - Permetex lasts a bit longer. It's easy to tell that either the pad lugs are too big or the hardware is the wrong size, as the guides show clear signs of wear. The pads themselves are great and provide good stopping power, but the time I had to spend eliminating the squeak became too much. Try PowerStop Z23 to see how they are.