Hi Joe,
Yes you can get TPMS system for the trailer for an additional $1500. I looked into it but it wasn't worth $1500 to me considering I already had the TST system.
The TPMS for the truck, as I know right now, just gives you an idiot light on the system screen that a tire has low pressure. I haven't found a screen yet that shows all tire pressures for each tire like one sees with the monitor for the TST system.
The Ford TPMS is really a very very basic warning system. I suspect future trucks, don't know when, will have a better system with a screen to actually see each tire pressure and maybe the temperature.
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