Rotated my tires on the X1 today and wondered about something. Maybe someone on Bimmerfest has experience with this. I swapped the front tires to the rear and rear to the front. My question is - How does the TPM system know where the individual wheels are located? Or do they even need to know? When I do a TPM reset does that identify which location each wheel is at? Here is the situation - if the front right tire is low on pressure and I have relocated that wheel to the right rear (no reset of TPM), will the TPM know its at the rear or will it still think its at the front? Am I the only one to ever have consternated over this? By the way I am accustomed to my Audi which does not have pressure sensors within the wheels, rather it evaluates tire rotation speeds to determine low pressure.