If I could get the TPMS off of my truck I would give this POS to you in a minute. I have a 2008 Ram Mega Cab and see no need for this at all. I check my air pressure once a month and I have no problem in reading a gage and checking the tire air pressure. My truck dings twice and the low air pressure symbol is illuminated every time I start the truck up. I run the front tires at 60 PSI and the rear at 45 PSI when I am using the winter tires. When I use my summer tires the air pressure is 50 PSI and the rear is 45 PSI without my trailer attached when the trailer is attached the front go to 55 PSI and the rear is 70 PSI (the tires are rated at 3415 LBS at 70PSI).
The only time that a TPMS system worked for me was on my wife's 2011 TDI Jetta. I was driving her car and ran over a nail, I heard the tire pop and than the car pull to the Left, the low pressure tire warning illuminated telling me to check the air pressure! REALLY!
This is a crutch for DINK'S and Yuppies who do not know which end of a screw driver to use and the dumbing down of America in my opinion.