This is the third time my TMPS light and "Low Tire Pressure" message have popped on... I have checked all (4) tires and they are still exactly where I had them inflated several weeks back when I went through this the last time. Does anyone know what the threshold pressure is to set the TMPS warning off? I do run about 10psi lower than the door sticker because the door sticker pressure was too much and wearing the center of my rear tires... I just find it odd and frustrating that there are no problems for a period of time, and then all of a sudden I have to go through and over-inflate the tires for a few miles for the TPMS sensors to reset and clear the light, and then drop back down to where I need them for proper tire wear and it seems OK for weeks, and now here we go again

 

did you check your spare

 

Actually I did, but my spare has a rubber stem so I'm @$$uming that it doesn't have a TPMS sensor... At any rate, the spare is at 68psi.