FWIW, the quick way to tell (almost) for certain if a vehicle has TPMS installed, is to look at the valve stem. All TPMS have a metal stem. While you can get a metal valve stem, they aren't really all that common as the rubber coated ones are much cheaper. When servicing a tire, you almost always end up replacing the stem, so with the TPMS, that part unscrews from the sensor itself. A rubber one just would be problematic which is why they went with a metal one.
2011 535i x-drive GT, 2014 i3 BEV