That means that any possible maintenance could not be postponed. New tires, new chain and sprockets, and new brake pads and rotors. The rotors were maddening to source. The low-production bike now 13 years out of production is becoming hectic to source parts. The reality that for all my want, she will likely need to be retired before I am ready. However with two X bikes in the household, we may squeak out a little more juice using the first bikes that taps out as the parts bike for the remaining bike. But as with all things "part is no longer available no alternative component available" means that even at a 200 percent mark up, BMW won't support the platform forever.
Galfer is still a viable option, but also providing the specifications incase you want to try to find other compatible rotors. Here are the rotors specs from Galfer:
I paired them with the EBC Semi-sintered (orange) on the front and Carbon X (red) on the rear. The reason for this is that I don't find that bike heats up the pads enough to get a decent bite from full sintered, especially sub 30 MPH off-road. The orange pads are a nice compromise to wear and braking.