Rear Disc brakes

[lennyrebel]

This may be a little off track but not that far. My 2002 Avalanche with rear disc brakes, 11 inch rotor has used 2 sets of pads in back and still on original pads in front at 65,000 miles. H2 is very similar. Any ideas or are they deliberately set up with heavy bias to back in proportioning valve due to almost even weight distribution. Does stay very straight on road when braking. Any ideas? Thanks The Rebel