I did a brake job on my 2002 2500 Dmax. The back brakes on the right rear were down to metal to metal. Put on a new rotor and pads. Now to the front. There were a lot of pad left but changed them any ...
The front brakes do most of the stopping. The fact that the backs were wore down and the fronts had a lot of pad left tells me they aren't working right. Could be several problems, don't know on newer models but could be master cylinder, proportioning valve... etc.