Will the TST Tire Pressure Monitoring System # TST-507-FT-4 Work on Un-threaded Valve Stems?

Question:

I am pretty new to this world of trailer towing and have a question about tires. I have purchased the TST-507-FT-4 to monitor my trailers tire pressure and temp. I am concerned that the sensor will not work with my trailer tire valve stem. I do not have the trailer here to look at now, but I recall checking the pressure and NOT having to unscrew a valve stem cap like i do on my tow vehicles tires. I believe that I do not have threads on my trailer tire valve stems. If that is the case, can these non-threaded valve stems some how be changed out to proper ones that work with my tires AND the sensor? Where would I go for travel trailer tire maintenance? just a regular tire shop??

asked by: Stephanie P

Expert Reply:

To answer your main question, yes, you can have the valve stems changed out to ones that will work with your tires and the TPMS system. I recommend going to either a local RV/Trailer Maintenance shop or your local tire shop; either of these spots will be able to make these changes on your trailer tires. You could even purchase the stems in advance and have them installed at one of those locations. In order to choose the correct stems, you'll need to know the maximum PSI rating on your tire, but something like the Americana Valve Stem # AM20903 is what you would use to accomplish this; this particular valve stem is rated for up to 65-psi but they are available as high as 200-psi for different applications.

With that being said, we can't say that we've ever seen a tire without some sort of threading on the valve. If you do find that you've got something like this on your trailer tires, you would need to have new valve stems put on in order to make the TST TPMS for RVs # TST-507-FT-4 compatible with your tires.

expert reply by: Erik B