I like having a TPMS, but I prefer a direct read out system, liek my TL had, I woudl page through their MID and once page woudl be each tire's exact pressure. The Camry is a percentage drop and to date I have yet to get an answer from Toyota on what the drop needs to be to trigger it. Also with everyone pumping up their tires over factory spec is everyone resetting their TPMS, the procedure is in the book. I set my pressure to 36 PIS and reset the TPMS, but if it is true that it won't trigger until liek a 20% drop well that is 29 PSI which to me is unacceptable I want to know sooner, but given that I usually check my tires every 2 weeks or so I guess it will do.