I changed out all 4 rotors and pads today. Took a couple of hours. It was my first time doing it, and it was fun. Impact wrench for the two bolts on each rotor made it easier for sure. Dewalt DW292 1/2" electric impact wrench with a 3/8 adapter, 1/4" socket with the phillips head. Just don't try to put it back on the same way, or you'll make the Grand Canyon out of the screw :doh: