Hi just completed 70,000 on my Avant 2.0 tdi front discs/pads and before we go off the deep end about its not the same basically it is, your model runs a bigger disc and pads but every other spec centering etc is the same, my car is used as a taxi therefore the brakes are always being used, from what I have learned over the last eighteen years of talking to manufacturer engineers and experience here goes, do not sit at traffic lights etc. with your foot on the brakes as this causes localised hot spots between the brake pad and disc as the brake pads dual function is to act as a heat sink drawing heat from the disc and dissipating it so if its clamped in the pressure position to the disc it transfers heat back to the metal which causes deformation of the disc, regular brake fluid changes are essential as the fluid is Hydroscopic and absorbes moisture which will accumulate in the calliper piston chambers and In sufficient quantity will cause pad drag as water can't be compressed, this brings me to the next point braking systems are like owning a racing Greyhound if you don't take it for a run every so often it will become fat and slow, its the same with brakes the occasional hammering forces any moisture around the system and dissipates it from localised areas.
Steve.