TPMS Discussion - Culled From A Welcome Mat Thread.

jjbbrewer

Resistance is futile
Joined
Aug 16, 2020
Messages
719
Location
Loveland, CO
Thank you for responding. I depend on TPMS in my auto’s. The add-on price of $450 seemed excessive

My TST 507 easily saved me $500, probably a lot more based on what's happened when I've lost a tire before.

I was going north on Overland Trail toward LaPorte when my TST started beeping. Left rear trailer tire was losing pressure. 95-90-84-80 ... WTF? Is this a malfunction?

I slowed down and found a good place to pull over. I walked back to the tire and heard a loud hissing. Feeling around the tire, I found what was causing the hissing - I guess I'd run over a box cutter blade. There is NO WAY I would have known about that otherwise. I'm pretty sure I would have eventually shredded the tire somewhere on 14 (with no place to pull over) and took out who knows what behind it on the trailer - rear tank dump, fuel station, certainly a bunch of J wrap.

As it was, I easily changed onto the spare (also with a TPMS sender) using my LevelUp to lift the trailer. Took maybe 20 minutes.

https://mobilemusthave.com/collections/tire-pressure-monitors/products/507-series-4-rv-flow-through-sensor-kit-includes-color-display-repeater

20240810_115431.jpg
 
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Thank you for responding. I depend on TPMS in my auto’s. The add-on price of $450 seemed excessive

Since we're mentioning TPMS brands, I'll highly recommend the TireMinder I-10. I think you can get if for around $275 for a 4 sensor system.

I had a TST and switched. Partly because the TireMinder is color (TST has since wised-up and now has one) and the TST was hard to see. But the real advantage of the TireMinder is that at a quick glance you can see all 4 (or more) tires pressures at once; no waiting on a silly display to cycle through the sensors one at a time.
 
Since we're mentioning TPMS brands, I'll highly recommend the TireMinder I-10. I think you can get if for around $275 for a 4 sensor system.

I had a TST and switched. Partly because the TireMinder is color (TST has since wised-up and now has one) and the TST was hard to see. But the real advantage of the TireMinder is that at a quick glance you can see all 4 (or more) tires pressures at once; no waiting on a silly display to cycle through the sensors one at a time.
A slight side question: How long is the delay between if/when a tire loses contact with the monitor, and the subsequent alarm, with the TireMinder system? My TST system is about an hour, which I have always felt was excessive, but I think I've read the new TST system reacts quicker, but don't really know.
 
My TST system is about an hour, which I have always felt was excessive, but I think I've read the new TST system reacts quicker, but don't really know.
If I get you right - I think my TST takes a handful of minutes to react .. certainly less than 10.

Right now I have my TST setup with 13 monitors.
  • 7 on the truck (6 on the ground + spare)
  • 5 on the trailer (4 on the ground + spare)
  • 1 on the air compressor after the regulator
 
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If I get you right - I think my TST takes a handful of minutes to react .. certainly less than 10.

Right now I have my TST setup with 13 monitors.
  • 7 on the truck (6 on the ground + spare)
  • 5 on the trailer (4 on the ground + spare)
  • 1 on the air compressor after the regulator
I'm not talking about reacting to a leak or flat, but to losing the signal from the tire sensor to the monitor. Easiest way to check is to leave the monitor on, and drive away from the trailer, and then see how long it takes to alert for lost signal. Mine takes an hour, way too long in my book, but since I put the repeater on it, I don't think it's an issue now. If that is fixed, I may have to look at updating my TST system.
 
I'm not talking about reacting to a leak or flat, but to losing the signal from the tire sensor to the monitor.
That's exactly what I thought you meant. I haven't timed it, but it's a few minutes. My disclaimer is that I've never used my TST without the repeater (which is mounted on the back of my receiver hitch crossbar).

The reaction to a leak is almost instantaneous. I know that from how it reacts to my air compressor.

What TST do you have? I *really* like mine now that it's saved my butt.
 
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That's exactly what I thought you meant. I haven't timed it, but it's a few minutes. My disclaimer is that I've never used my TST without the repeater (which is mounted on the back of my receiver hitch crossbar).

The reaction to a leak is almost instantaneous. I know that from how it reacts to my air compressor.

What TST do you have? I *really* like mine now that it's saved my butt.
It's an older unit, B&W monitor, and through-the-sensor air input. I bought it in 2012 after two tire failures on tires less than 2 years old. If I bought a new one, I'd drop the through-the-sensor, since they limit air flow so much I always remove them to add air.
 
If I bought a new one, I'd drop the through-the-sensor, since they limit air flow so much I always remove them to add air.
Agreed. Also the through the sensor schrader connector is too short to work with my air chuck, so I use them as button sensors as you do.
 
We wanted to purchase a small RV trailer, an Imagine XLS MKE17 - but the Alexander Fire moved up our timetable. We grabbed the dogs and a few things, drove to Wyoming and bought the RV.

We are at Walmart 15 minutes later buying sheets, pillows and towels and at an RV Park a few minutes after that. Thanks to a very friendly neighbor at the park, I set up the new RV.

It was a whirlwind of decisions and flowing cash. The flow of cash continues with all of the accessories I know I need and the ones I do not know about.

I hope I can get pointers from the kind people in this forum.

Welcome to the forum, you'll find plenty of helpful folks here who are more than willing to help you spend your money.
 
A slight side question: How long is the delay between if/when a tire loses contact with the monitor, and the subsequent alarm, with the TireMinder system? My TST system is about an hour, which I have always felt was excessive, but I think I've read the new TST system reacts quicker, but don't really know.

I wasn't sure how to test this. I didn't want to remove a tire and take it away. So I left the sensor on and removed the battery figuring that would tell the monitor that the sensor was gone. After an hour nothing happened; no alarm on the monitor.

Not sure what that means. If the battery goes dead then I guess I can figure I won't get an alarm or any notification. Not sure what happens if the tire is turning when this happens but I'll assume the same non-alarm situation.

If I remove the sensor from the valve I get an immediate alarm.

Maybe I'll remove a battery and then turn the system on to see what happens.

So what should make of all this?

I don't recall, it might have been the TST system, but I had a system once that wouldn't read the sensors until I drove for a few miles.
 
I wasn't sure how to test this. I didn't want to remove a tire and take it away. So I left the sensor on and removed the battery figuring that would tell the monitor that the sensor was gone. After an hour nothing happened; no alarm on the monitor.

Not sure what that means. If the battery goes dead then I guess I can figure I won't get an alarm or any notification. Not sure what happens if the tire is turning when this happens but I'll assume the same non-alarm situation.

If I remove the sensor from the valve I get an immediate alarm.

Maybe I'll remove a battery and then turn the system on to see what happens.

So what should make of all this?

I don't recall, it might have been the TST system, but I had a system once that wouldn't read the sensors until I drove for a few miles.
The easiest way to check it is to leave the monitor on in the truck and then drive away, like running errands or some such. It should alert the loss of signal from the sensor. Removing the battery should show up as a lost signal. That's the way my TST works, and it shows no result when it cycles to the tire with a dead battery. Just alerts again. But that may vary according to the brand. However, if I have a dead battery when I turn on the monitor, it will simply show no signal, like it's waiting for the sensor to connect. It won't alert.

Yeah, removing the sensor is the same as no-pressure alert.
 
Hoopy Frood;536060[COLOR=#ff0000 said:
]The easiest way to check it is to leave the monitor on in the truck and then drive away,[/COLOR] like running errands or some such. It should alert the loss of signal from the sensor. Removing the battery should show up as a lost signal. That's the way my TST works, and it shows no result when it cycles to the tire with a dead battery. Just alerts again. But that may vary according to the brand. However, if I have a dead battery when I turn on the monitor, it will simply show no signal, like it's waiting for the sensor to connect. It won't alert.

Yeah, removing the sensor is the same as no-pressure alert.

Thanks, I'll try that.

I wish that was the case. I'll try again.
 
We have the TST507 that is about 5 years old now. I haven't tried the test you are talking about with a loss of signal like a tire fell off and rolled away. I guess I could try it on our spare tire which I have a cap sensor on. I could let the monitor update and show pressure for all the 4 tires and the spare, then remove the spare tire and roll it away, then see what happens.

Would be interesting to talk to someone using a new TST507 and see if the company has corrected this issue.

By the way one thing that concerns me is the RV winch cable breaking on the spare tire and it dropping out and go bouncing down the highway. That happen to my old 2002 Ram pickup, the winch cable broke and the spare fell out. Lucky I had just started up from a traffic light when the spare tire fell out. It left the tire setting in the intersection. The lady behind me in a mini cooper looked shocked!
 
We have the TST507 that is about 5 years old now. I haven't tried the test you are talking about with a loss of signal like a tire fell off and rolled away. I guess I could try it on our spare tire which I have a cap sensor on. I could let the monitor update and show pressure for all the 4 tires and the spare, then remove the spare tire and roll it away, then see what happens.

Would be interesting to talk to someone using a new TST507 and see if the company has corrected this issue.

By the way one thing that concerns me is the RV winch cable breaking on the spare tire and it dropping out and go bouncing down the highway. That happen to my old 2002 Ram pickup, the winch cable broke and the spare fell out. Lucky I had just started up from a traffic light when the spare tire fell out. It left the tire setting in the intersection. The lady behind me in a mini cooper looked shocked!
I would be very appreciative if you check the time. I've never gotten a definitive answer about the elapsed time on the new TST system. I would think they would have touted the decreased alert time, but maybe they didn't want to direct attention to that deficit on the older systems.
 
I would be very appreciative if you check the time.

So today I have the spare off of my trailer here at home. It has a sensor in it so I tried this experiment. (this is a TST 507 that I bought on 1/13/2021).

While sitting in the driveway, I let it connect up to all of the truck tires and the trailer spare - all reading temp & pressure while in truck+trailer mode. Then I started a timer and drove away. It kept reading the same trailer spare temp & pressure for 14 minutes before it switched to "truck only" mode.

I never got a warning, message, or whatever - it just silently switched modes. I wouldn't have noticed if I hadn't been watching it continuously.

My conclusion is that if your trailer disconnects completely (all sensors are off), the TST won't do anything for 14 or so minutes. Then it will just automatically and silently go into "truck only" mode.

I will try another experiment sometime when I still have all but one of the trailer sensors connected, but leave one tire behind. I think that would simulate the "lost a wheel" situation better.
 
So today I have the spare off of my trailer here at home. It has a sensor in it so I tried this experiment. (this is a TST 507 that I bought on 1/13/2021).

While sitting in the driveway, I let it connect up to all of the truck tires and the trailer spare - all reading temp & pressure while in truck+trailer mode. Then I started a timer and drove away. It kept reading the same trailer spare temp & pressure for 14 minutes before it switched to "truck only" mode.

I never got a warning, message, or whatever - it just silently switched modes. I wouldn't have noticed if I hadn't been watching it continuously.

My conclusion is that if your trailer disconnects completely (all sensors are off), the TST won't do anything for 14 or so minutes. Then it will just automatically and silently go into "truck only" mode.

I will try another experiment sometime when I still have all but one of the trailer sensors connected, but leave one tire behind. I think that would simulate the "lost a wheel" situation better.
Thank you. That does help with nailing down how this works. Mine is old enough it doesn't have the "Truck Only" mode. So we do know that it at least is 14 minutes. :) Or maybe take the spare far enough away from the truck it won't connect. Although that sounds like more work than I would care to do. :)
 
I would be very appreciative if you check the time. I've never gotten a definitive answer about the elapsed time on the new TST system. I would think they would have touted the decreased alert time, but maybe they didn't want to direct attention to that deficit on the older systems.

I'll see if I can get around to it in the next few days. Just reading, I don't think our TST507 vintage has a truck only mode either, i don't know.

I'll probably report my findings in a separate thread so we don't pollute the OPs original thread. Something like TPMS TST507 loss of signal delay time
 
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I'll see if I can get around to it in the next few days. Just reading, I don't think our TST507 vintage has a truck only mode either, i don't know.

I'll probably report my findings in a separate thread so we don't pollute the OPs original thread. Something like TPMS TST507 loss of signal delay time
Cool, I'll be looking forward to the results.
 
MODERATOR NOTICE.....

I moved these posts from the Welcome Mat forum as a few of us kind of morphed it into a TPMS discussion. Hopefully we can continue the discussion here and the thread these came from can go on to focus on the new member from Colorado.
 
Sorry about that. I definitely contributed to the, kind of, off topic veer in direction. :) I do tend to wander, although "all who wander are not lost". :)
 

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