Your rear brake is rubbing on the disk because it is worn out. Your others are probably close to worn out. Soon you might not have any brakes. Then you will step on the brakes and not have any. Hit something cheap when that happens.
--------------
Please check the sliders...on rear disc brake systems the calipers must be free to slide on steel pins. Over time the pins seize and the caliper sticks or binds on the pins. When that happens the caliper will not return to its normal position and will cause the brake pads to drag on the rotor.
Could be the rear bearings, brake shoes, brake pads and of course, the suspension. It might help to jack the vehicle up and spin each wheel by hand.
my brake lights stays on wile driving how can i fix it
No. Usually the parking brake is a separate mechanism from the driving brakes, and its usually only found on the rear wheels.
Bad brake light switch, it's on top of the brake pedal under the dash.
When they are wore out. It will depend on driving habits.When they are wore out. It will depend on driving habits.
your brake light switch is probably out
Sounds like your handbrake is stuck or rear brake drums are seized. Check out hand barke system and rear brakes.
It can wear out your rear brakes prematurely if you do it for a long distance because the emergency brake pedal/handle just applies constant pressure on the rear brakes as if you were putting your foot on the brake pedal. It also kills your gas mileage.
Rear disc or drum?, if its disc there's an inexpensive tool used to turn in the the caliper piston if this has been done and they still drag a sticky E-brake cable or binding calipers or master cylinder problem may exist
Rear disc brake pads, no. Rear brake shoes, yes.
rubbing from brakes or rubbing from frame
Could be a bad strut or shock No I have disconnected both rear shocks and knocking noise is still there whilst driving. Seems to be coming from rear. When stationary I can bounce rear of car up and down and hear noise with handbrake on but not with handbrake off. Any ideas?