After you have taken the wheel off the car. You need to remove the brake caliper. The caliper will either have two bolts or pins holding it on. Remove those two pieces and lift the caliper off with the nrake pads making sure those stay in place, because if they come out you must put them back in correctly. Then after that is off there is a large nut that needs to come off from in front of the rotor. Remove that and the rotor should come off no problem. Remember that bearings are in the front and back of the rotor. Remove those when you replace the rotor. Use those or purchase new ones.