Excessive rear brake dust

Good morning,

That is most likely from the brand of brake pads that were installed on the rear brakes.

If they were non metallic or much cheaper brand than required, they will produce all that dust.

I would replace the pads with a good quality brand.

https://www.2carpros.com/articles/how-to-replace-rear-brake-pads-and-rotors

Roy

Brake Pads
Special Tool(s) / General Equipment

Brake Caliper Piston Retractor
Materials

Name Specification
Motorcraft® DOT 4 LV High Performance Motor Vehicle Brake Fluid
PM-20 WSS-M6C65-A2

Motorcraft® Metal Brake Parts Cleaner
PM-4-A, PM-4-B -

Removal

NOTICE: If the fluid is spilled on the paintwork, the affected area must be immediately washed down with cold water.

NOTICE: Do not allow grease, oil, brake fluid or other contaminants to contact the pad lining material, or damage to components may occur. Do not install contaminated pads.

NOTE: Removal steps in this procedure may contain installation details.

Remove the wheel and tire.
Refer to: Wheel and Tire (204-04A Wheels and Tires, Removal and Installation) .
NOTICE: Care must be taken when servicing rear brake components without disconnecting the parking brake cable from the brake caliper lever. Carefully position the caliper aside using a suitable support or damage to the parking brake cable end fittings may occur.

NOTICE: Do not allow the caliper to hang from the brake hose or damage to the hose may occur.

NOTE: Use hand force and a rocking motion to separate the brake caliper from the brake pads.

Remove the bolts and position the brake caliper aside.
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NOTICE: Brake pads with adhesive on the insulator are one-time use only. When the brake pads are separated from the brake caliper, new brake pads must be installed to prevent brake noise and shudder.

NOTE: For 13.5 in (345 mm) brakes, note the orientation of the inner and outer brake pads for reference during installation. Outer brake pads will have OTR stamped on the top of the backing. Inner brake pads (Police vehicles only) will have INR stamped on the top of the backing.

Remove and discard the brake pads.
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Remove and discard the brake pad clips.
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Thanks, I will watch the wear as the pads are like new right now. I have never in my life witnessed a vehicle with brake dust on the rear wheels while the fronts are spotless.

You are welcome.

Always glad to help.

Roy