Genuine 2003 BMW Z4 Brake Pads

2003 BMW Z4 Brake Pads Parts Questions & Experts Answers

• Q: How to replace the front brake pads on 2003 BMW Z4?

  A: Apply the parking brake, jack up the front of the vehicle, and support it on jack stands before removing the front wheels. Carefully unclip the anti-rattle spring from the side of the brake caliper, noting its installed position, and slide the brake pad wear sensor from the brake pad if equipped. Remove the plastic caps from the caliper guide bushings to access the guide pin bolts, then loosen and remove these bolts. Lift the caliper away from the mounting bracket and tie it to the suspension strut with a suitable piece of wire, ensuring it does not hang unsupported on the flexible brake hose. Unclip the inner brake pad from the caliper piston and withdraw the outer pad from the mounting bracket. Measure the thickness of each brake pad's friction material; if either is worn to the specified minimum thickness or less, replace all four pads, especially if any are contaminated with oil or grease. If the pads are serviceable, clean them with a fine wire brush, paying attention to the sides and back of the metal backing, and clean the pad locations in the caliper body or mounting bracket. Check that the guide pins fit lightly in the caliper bushings and inspect the dust seal around the piston for damage. If new brake pads are to be installed, push the caliper piston back into the cylinder using a piston retraction tool, C-clamp, or suitable pieces of wood, clamping off the flexible brake hose and connecting a brake bleeding kit to the bleed screw. Open the bleed screw as the piston is retracted to collect surplus brake fluid, closing it just before the piston is fully retracted to prevent air from entering the hydraulic system. Apply a small amount of brake anti-squeal compound to the backing plate of each pad and the contact points on the caliper bracket, then install the outer pad to the caliper mounting bracket with its friction material against the brake disc. Clip the inner pad into the caliper piston and maneuver the caliper assembly into position, then install and tighten the caliper guide pin bolts to the specified torque setting and cover the ends of the guide pins. Clip the pad wear sensor back into position in the outer pad if equipped, ensuring the wiring is correctly routed, and clip the anti-rattle spring into position in the caliper. Depress the brake pedal repeatedly until the pads are pressed into firm contact with the brake disc, restoring normal pedal pressure, then repeat the procedure on the remaining front brake caliper. Finally, install the wheels, lower the vehicle to the ground, and tighten the wheel bolts to the specified torque.