Burn-in is different from other burn-ins and involves a burn-in process. currently near the 1000 mile mark so they are fully broken in and the bite on these pads is great. There's still quite a bit of noise as you can clearly hear the rotors spinning on the pads, otherwise it's great. The first-gen Tundra always had crappy brakes, but they work great. pair these pads with knobbed and slotted EBC rotors for a killer combination expensive but worth it. My only complaint is the noise