Hmmm. This is interesting. I have a set of summer wheels with TPMS sensors piled up next to my winter set (stock wheels with AW tires on). Recently, my winters set off the low tire pressure monitor alert and I figured it was a false error, but was not sure what was going on. I checked the pressure and low and behold, all the tires were sitting about 26 psi. Now it is has been getting cold, so I'd figure them to be off a bit. i filled them to spec (these are 205/40-17s) so I matched the numbers on the car door 39/36. However, the fault has persisted. Do I need to "do" something? Seemed to be fine before and I believe they are properly mated to the associated wheel location. I do hardly drive the car.