Review on 🔥 Enhanced Performance Kit: Power Stop K5878 Front Z23 Carbon Fiber Brake Pads with Drilled and Slotted Brake Rotors by Dave Willis

Kit: This is a complete kit including rubber seals, clamps, gaskets, rotors, grease, well packaged and looks high quality. Features: Braking ability is good; creates quite a bit of dust and there is a bit of noise when braking, maybe due to holes in the rotors, but that's not a big deal. Safety Issue: Less than a week after installation, I took the car (2012 Mazda CX-9) to COSTCO for a tire change. Your technician noticed that the two bolts holding the rotors to the hub were not fully tightened. He tried to tighten them, but they were already tight and at least 1/16" to 3/32" above the surface of the rotor. This means the tire rims will not sit snugly on the rotors. This can cause all sorts of problems, including vibration and possible jam nut loosening. I checked and made sure he was right. I checked the screw fit in the old rotors and no problem as the screw head recess was deeper. So I had to grind the screw heads to sit below the surface of the rotors. If you don't notice, it could be a security issue. The manufacturer should check this and, if necessary, withdraw it.