I have a 2008 honda accord. The driver side rear brake is always wearing out before any other. Replaced rotors at least 4 time and calipers. don’t know.Got the car used.
You have a dragging caliper on the driver’s side rear corner. The way you check for drag is to drive the car for a few miles and stop. Feel how how the wheels are. If the driver’s rear is hot, there is your drag. If you have replaced the caliper and the problem persists it is likely the rubber brake hose. They fail internally and create a check valves the pressure holds and drags the brake pad. If one hose is bad, the others are not far behind, replace all 4.