change out valve stems for TPMS?

[TGlock24]

I have the same TPMS on my TT and my truck (10 sensors total) I definitely think the flow through sensors are the way to go. I am 66 years old and getting down on my knees and using a tool to take the cap sensors off every time I want to put air in the tires seems to time consuming. As far as the metal valve stems, once I switched I will never go back to rubber. Metal valve stems add support so the stem and do not flop around when adding air. TPMS or not I always install metal valve stems.

[Jefferson Beifuss]

And I went the other way. 8 sensors, non flow thru, skipped the fiddly lock nut arrangement and just screwed the sensor on. I've had none come off nor stolen in 2 years of travel. (I'm 68 and bad knees AND I'm lazy...)

[Malco1]

Good afternoon everyone. So I have been doing research (and posting questions on forums) regarding getting a TPMS for my trailer. I have settled on the TST 507 system, but am now wondering if it is worth the cost of getting the rubber valve stems replaced with metal ones to use the flow thru sensors? To have a single display and more info I am also considering have the tow vehicle done as well (even thought it already has a TPMS built in, but only shows current PSI). The cost to swap out the trailer valves is ~$70 and the tow vehicle valves is ~$130.

All said and done I'm looking at 10 tires as I figure I would want to know the status of spares as well (at least to know they are full - my TV spare was down 15 PSI the other day, but it had not been checked in a while)

Thoughts on swapping out the rubber valve stems for metal?

Does anyone have experience with both the cap and flow thru? Are the flow thru that much more convenient to warrant the cost of swapping out the rubber valve stems with metal?

Thank you.

I had the TST system on my 2012 Tiffin Phaeton motor home with the original puck sensors. When TST came out with the flow through sensors, I bought a set, because it sounded like a good idea. The flow through sensors had problems, the plastic battery doors were always cracking, and you couldn't get an accurate pressure reading through the sensors. After a while the flow through sensors started to go bad, probably because water got in through the cracked battery doors. As the flow through sensors went bad I replaced them with the original puck sensors. When I sold the motor home it had a mixture of sensors, but they all worked. Maybe the flow through sensors are better now, but on my 303rls I have the TST with the standard puck sensors and rubber valve stems.

[SilentService]

Would I have to deflate the tires (and lose the nitro fill) when I set up the TPMS?

When I initially put mine on, I still had the nitro in the tires. It did not affect the TPMS.

[bertschb]

...Would I have to deflate the tires (and lose the nitro fill) when I set up the TPMS?

The air you breathe is 78% nitrogen so you won't be losing much when you deflate the tires :-)

[Ellen and Jerry]

Please, someone explain the difference in puck VS flow through system.

[OurNewEra]

Please, someone explain the difference in puck VS flow through system.

The major difference is that flow through allow you to add air, or take out, without removing the sensor. With the puck style like on my Tire Minder Tm-77 I have to remove the sensor to add air or bleed any off. I haven't found it to be a problem. It's also a good way to ensure my sensors are actually working. When I remove my sensor I get a fast leak and low pressure alarm. If I didn't get the alarm then I know there is an issue with that sensor.

[Bwood BBQ]

Please, someone explain the difference in puck VS flow through system.

https://www.google.com/url?sa=t&sour...H1fC1KcWOE2Mn0

Here's a good video on the difference between the two that come with the TST tpms.

[Ellen and Jerry]

Thanks Newera and Bwood for the info. I viewed the utube and found that helpful. I have the pucks for the trailer but have not installed them yet.

[Ynot4me2]

You will be glad you did! I would suggest to grab a couple extra in case you need one in an emergency situation. I had a blow out on my last trailer and discount tire didn't have an o ring to fit. Luckily I didn't need it. I bought 2 extra this time just in case. Also check the trailer spare. My spare has a standard metal stem since it's just a utility type trailer rim. It's not the pretty aluminium one on the axles.

Love the idea of getting spare ones. Thanks I hadn't thought of that.