I just swaped out my tires with some rubicon take offs and while at discount tire they informed me that the spare needed to be changed out to to clear the dash warning. They said that Jeeps have been putting TPMS sensors in there spares for awhile. I was only able the cary the four tires in the jeep so left the spare at home. Well once they were done changing the TPMS sensors on the ground and I drove off the dash error cleared and everything looks great. Now Im not sure if i should take the spares back and check or not. Does anyone know for certain if the spare tire and wheels have TPMS?