At 2,000km I noticed the wear levels were falling rapidly so took the car in. The front sensor was reset 70,000km and the rear to 50,000km. Within 1,000km, they were down to 30,000km front and 28,000km rear which is roughtly where they were prior to the reset.
In my entire driving life, I have never had rears wear first. Something does seem strange. I also have more brake dust on the rears, the left rear in particular, and very little on the fronts.
2012 BMW 535i X-drive; Space Grey/Black Dakota, Fineline; Executive (Auto trunk, NAV, HiFi Prof, Lumbar, Rear Cam, SIRIUS, Voice), Technology (Blind Spot, Hi-Beam Assist, Lane Departure, Surround View), APPS, Rear heated seats, Tint.
Retired: 78 300D, 81 300SD, 87 190E, 88 Porsche 924, 89 260E, 93 300E, 97 Volvo 850, 98 E320, 03 BMW 325iT, 02 C230 Sport Coupe, 08 BMW 535i