You bought a used set of HRE's right? They did not come with sensors in them already? To answer your question, yes, use the stock ones, or buy new ones. You will have to have your tires unmounted to pull the sensors out of the stock wheels, and then have your new wheels unmounted so you can install the sensors, and the mounted and balanced again. I don't believe you can override you TPMS system. I think BMW is required by law to put them in your vehicle now, so it is something that you cannot override.
2008 M3 Sedan- Alpine White