How to change rear brake discs on BMW X3 E83 – replacement guide
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The steps may slightly vary depending on the car design.
How to change rear brake discs on BMW X3 E83 [TUTORIAL AUTODOC]


- Replace the brake disks on the car BMW X3 E83 in complete set for each axis. Regardless of the state of components. This will ensure even braking.
- The replacement procedure is identical for both brake disks on the same axle.
- When changing the brake discs, always replace the brake pads.
- Please note: all work on the car – BMW X3 E83 – should be done with the engine switched off.
- Step 1

Open the bonnet. Unscrew the brake fluid reservoir cap.
- Step 2
Secure the wheels with chocks.
Step 3
Loosen the wheel mounting bolts. Use wheel impact socket #17.
- Step 4

Raise the rear of the car and secure on supports.
- Step 5

Unscrew the wheel bolts.
AUTODOC recommends:Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. BMW X3 E83
- Step 6

Remove the wheel.
- Step 7

Remove the dust boot caps of the brake caliper guide pins. Use a crowbar.
- Step 8

Unscrew the brake caliper fastening. Use HEX No.H7. Use a ratchet wrench.
- Step 9

Disconnect the brake pads wear sensor. Use round-nose pliers.
- Step 10

Detach the brake caliper retaining spring. Use a crowbar.
- Step 11

Spread the brake pads. Use a crowbar.
- Step 12

Remove the brake caliper.
Replacement: brake discs – BMW X3 E83. Professionals recommend:Tie the caliper to the suspension or to the body with a wire without disconnecting from the brake hose to prevent depressurization of the brake system.Make sure that the brake caliper is not hanging on the brake hose.Don't press the brake pedal after the brake caliper has been removed. As a result, the piston can fall out from the brake cylinder, and brake fluid leakage and depressurization of the system may occur. Check the brake caliper bracket, brake caliper guide pins and boots. Clean them. Replace, if necessary.
- Step 13

Remove the brake pads.
- Step 14

Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
- Step 15

Unscrew the caliper bracket fastening. Use a drive socket #16. Use a tap wrench. Use a ratchet wrench.
- Step 16

Remove the caliper bracket.
- Step 17

Clean the brake disc fasteners. Use a wire brush. Use WD-40 spray.
- Step 18

Unscrew the brake disc fastening. Use HEX No.H6. Use an impact screwdriver. Use a rubber mallet.
- Step 19

Remove the brake disc.
- Step 20

Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
- Step 21

Remove anti-corrosion grease from the new brake disk. Use a brake cleaner.
AUTODOC recommends:Replacement: brake discs – BMW X3 E83. After applying the spray, wait a few minutes.
- Step 22

Install the brake disc.
- Step 23

Tighten the brake disc fastening. Use HEX No.H5. Use a torque wrench. Tighten it to 16 Nm torque.
- Step 24

Clean the brake caliper bracket from dirt and dust. Use a wire brush. Use a brake cleaner.
Replacement: brake discs – BMW X3 E83. Professionals recommend:After applying the spray, wait a few minutes.
- Step 25

Install the brake caliper bracket.
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