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 ...
On my 2007 GMC 3500HD dually at 175,000 miles one rear pad was down to metal so I replaced one rotor and all the pads. The front pads had over 50% of the original pad left. As for temperature they all feel warm.