How to properly replace a brake disc on Mazda MX-5 Miata?

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Unscrew the lug nuts of the wheels, lift up the vehicle and place it safely on jack stands. Take out the wheel and replace it with the lug nuts to secure the disc in place, and may use some washers under the nuts to ensure a good fit to the hub. Disassemble by removing the caliper of the brake without disconnecting the brake hose and hanging it off (via a piece of wire) after removing the caliper bolts. Examine the disc surface of the disc, both as to score marks and damage, of which light scratches and shallow grooves are normal, deep scoring of more than 0.039-inch (1.0 mm) necessitates refinishing by an automotive machine shop. Inspect the disc on both sides, where serious wear caused by non-replacement of brake pads requires the change of the disc. In order to record disc runout, position a dial indicator on the edge of the disc (approximately 1/2-inch away), position it to zero and rotate the disc at a slow speed; when the reading surpasses the limit, refinishing is necessary. In any case an eventual resurfacing with a smooth finish is advisable to remove the brake pedal pulsation. Unless resurfacing, wipe out any glaze with a swirling motion with emery cloth or sandpaper. Take care not to machine the disc below the minimum thickness specified and which is cast in the inside of the disc and measure the thickness with a micrometer. Unscrew the bracket of the brakes caliper and take off the disc on the hub. Install the new disc on top of the wheel studs, caliper bracket, and screw the bracket bolts up to the required torque. Install the caliper and brakes pads, reattach the wheel and place the vehicle on the ground, tightening the lug nuts up to the required torque. Check the brake fluid level in the system, make adjustments where necessary and press the brake pedal a few times to check the contacts between the disc and the brake pads. The only thing that needs to be done is bleeding when the brake hose is disconnected. Lastly, test the brakes to ensure that they are working properly before a person drives.

Genuine Mazda MX-5 Miata Brake Disc

5 Brake Discs found

Mazda MX-5 Miata Rotor Part Number: N251-26-251

Mazda MX-5 Miata Rotor Part Number: N251-33-251

Mazda MX-5 Miata Rotor Part Number: N123-26-251B

Mazda MX-5 Miata Rotor Part Number: N12Y-33-25XC

Mazda MX-5 Miata Rotor Part Number: NA5F-33-251A

Mazda MX-5 Miata Brake Disc

Mazda MX-5 Miata Brake Disc Parts and Q&A

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