A loud thud noise in the rear brakes might be caused by stuck calipers or by brake drums that are out of round. You might also have uneven wear on the brake pads.
You need to check for caliper slide.....if the caliper does not slide evenly, the wear will be uneven. If your slide bolts are gummed up, rusty or seized, you will get uneven brake wear.
i had a similar prob but it was related to the brake booster. it is a cylendrical device that creates brake pressure and when deffective causes the brakes to be engadged and causes brake wear and slow gas mileage and warpping of brake drums and excessive wear of brake pads..... often over-looked.
You need to check the following brake rotors for warping Pads for uneven wear wheel bearings for wear steering control arms and ball joints may be worn out
When they wear out!!!!
Rear Calipers sticking. Replace the calipers and drain and flush the entire brake system. In addition, replacing the rotors when you install new pads will make them last longer. Worn rotors will not mate properly to the new pads, causing uneven wear.
It probably means that either the brake fluid is leaking or the brakes are failing. You should get it checked out. Can be that the master cylinder is low of brake fluid. Unless you have a leak this is a sign that your brake pads more than likely need replacing. As the pads wear the fluid level goes down. Inspect your brake pads.
You're supposed to bleed all four brakes or you really arent doing anthing, you could also cause improper and uneven wear on the brake pads them selves
The brake dust is from the brake pads, which wear over time from use, and release small particles which results in "Dust" it will usually just wash off with a garden hose.
There has been some speculation that honda CRV's from 2006 to 2011 were using the defective accord brake pads where honda settled with the owners of the accords, as to why a possibility that crv's rotors were damaging the rotors with uneven wear before the pads got down to the metal. If one owns a CRV from 2006 to 2011, get replacement brake pads on all 4 wheels, so there won't be the possibility of future rotor damage from these defective pads, even if honda does not want to admit there maybe a problem with the pads.
you may have a warped rotor which will cause the "shake" and the pulling to the left you have a brake caliper may be frozen not allowing the brake to grab or your pads have worn uneven due to the warped rotor. If the truck is pulling to the left check the right side for the wear. If the pads are thinner than the left then have the rotor turned at your local auto parts store before replacing your brakes
As the brake pads wear they move closer to the rotor. This causes the level in the master cylinder to drop as more fluid is needed to take up the space. Check your pads, and I would bet you will find they need replacing.