Recommended replacement interval for the part category Brake Disc : 50000 km

Important!

This replacement procedure can be used for:
BMW X3 (E83) 2.5 i … View more

The steps may slightly vary depending on the car design.

How to change rear brake discs on BMW X3 E83 [TUTORIAL AUTODOC]

All the parts you need to replace – Brake Discs for X3 (E83) and other BMW models

Brake Disc

BMW X3 (E83) 2.5 i

Replacement: brake discs – BMW X3 E83. Tools you need:

                        Wire brush
                      
                        Nylon cleaning brush
                      
                        WD-40 spray
                      
                        Brake cleaner 
                      
                        Copper grease 
                      
                        Torque wrench
                      
                        Drive socket # 16
                      
                        HEX bit No.H5
                      
                        HEX bit No.H7
                      
                        Wheel impact socket #17
                      
                        Brake caliper wind back tool
                      
                        Ratchet wrench
                      
                        Tap wrench
                      
                        Rubber mallet
                      
                        Impact screwdriver
                      
                        Round-nose pliers
                      
                        Crow bar
                      
                        Wheel chock

Buy tools

Replacement: brake discs – BMW X3 E83. AUTODOC recommends:

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.

Carry out replacement in the following order:

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 7 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.
Step 26

Tighten the brake caliper bracket.Use a drive socket #16.Use a torque wrench.Tighten it to 80 Nm torque.
Step 27

Treat the brake caliper piston.Use a nylon cleaning brush.Use a brake cleaner.

AUTODOC recommends:

Replacement: brake discs – BMW X3 E83. After applying the spray, wait a few minutes.
Step 28

Press in the brake caliper piston.Use brake caliper wind back tool.
Step 29

Install the brake pads.
Step 30

Install the brake caliper and fix it.
Step 31

Install the brake caliper retaining spring.
Step 32

Tighten the brake caliper fasteners.Use HEX No.H7.Use a torque wrench.Tighten it to 35 Nm torque.
Step 33

Install the dust boot caps of the brake caliper guide pins.
Step 34

Connect the brake pads wear sensor. Use round-nose pliers.
Step 35

Clean the wheel rim mounting seat.Use a wire brush.

Step 36

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 37

Clean the brake disk surface.Use a brake cleaner.

Replacement: brake discs – BMW X3 E83. Tip:

After applying the spray, wait a few minutes.
Step 38

Install the wheel.

AUTODOC recommends:

Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. BMW X3 E83
Step 39

Screw in the wheel bolts.Use wheel impact socket #17.
Step 40

Lower the car and working in a cross order, tighten the wheel bolts.Use wheel impact socket #17.Use a torque wrench.Tighten it to 120 Nm torque.
Step 41

Remove the jacks and chocks.

Replacement: brake discs – BMW X3 E83. Tip from AUTODOC:

Check the brake fluid level in the expansion tank and refill if necessary.Without starting the engine, press the brake pedal several times until you feel significant resistance.
Step 42

Tighten the brake fluid reservoir cap. Close the hood.

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