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Old 04-29-2016, 11:42 AM   #21
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Originally Posted by Papa GLS View Post
Another question. Many here recommend balancing the tires; does adding the sensors effect the balance?
Also read on the web site that the TST507 updates every 6 seconds, but only sends info to the monitor every 5 minutes. Not instantaneous info at all; a lot can happen in 5 mins.
Also understand you may need to add a signal booster. I really am trying to justify one of these, but still not sure. Will study it some more.
Thanks for all of the info so far; will continue to monitor this thread.
I'm not sure were you got that information from unless they updated there monitors. It will cycle through all your tires, but only shows new pressure and temps every 2 mins. The instantaneous would be a slow like or a fast leak or heat, you will see a red light flash and a symbol of the problem. TST was going to make some changes to color monitor and the speed of the system I do not know if they did that yet....
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Old 04-29-2016, 11:45 AM   #22
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Sorry to disagree, we did 5 with the flow thru sensors both on and off and all 5 were off by 0.5 oz which is enough to cup a tire.
He is correct about having them balanced with them on, I don't know enough to say it will cup, but I trust OC... Ps: but remember all trailers come unbalanced from the factory, just baffles me.
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Old 04-29-2016, 04:24 PM   #23
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Thanks for all the info. Don't see how the flow throughs could weigh less than an ounce. Seems like if they weigh enough to damage a valve stem, they could probably effect balance.
Got the info about the updating off of a web site that handles the TST's.
While it is true that most TT tires come unbalanced, if you add or remove a sensor it could effect balancing if you do balance your tires.
Keep the info coming, I need all the help I can get. Still haven't decided yea or nay. Can see some good & some not so good, but I'm all for keeping myself & those around me safe.
Thanks again to all.
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Old 04-29-2016, 05:46 PM   #24
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Thanks for all the info. Don't see how the flow throughs could weigh less than an ounce. Seems like if they weigh enough to damage a valve stem, they could probably effect balance.
Got the info about the updating off of a web site that handles the TST's.
While it is true that most TT tires come unbalanced, if you add or remove a sensor it could effect balancing if you do balance your tires.
Keep the info coming, I need all the help I can get. Still haven't decided yea or nay. Can see some good & some not so good, but I'm all for keeping myself & those around me safe.
Thanks again to all.
Remember that not only does the weight of the object matter, but also the distance from the center of rotation. Most TPMS sensors with suitable valve stem extensions are pretty near the center of rotation.
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Old 04-29-2016, 05:59 PM   #25
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Never understood why TT and 5er tires are not balanced by the manufacturer as they rotate as fast or faster than the TV tires. It is true that you don't feel the rough ride of the TT, but the structure of the TT certainly does as does everything inside. I had all 4 of my valve stems replaced with metal stems and tires balanced ( with sensor on) for $60. Well worth it to me.
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Old 04-29-2016, 06:17 PM   #26
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Searched for further info on TST system & found that the flow through sensors do indeed weigh less than an ounce. Reportedly weigh .8 ounces. Still searching for more info.
Thanks again
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Old 05-13-2016, 09:21 AM   #27
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The TST system probably saved my bacon. On highway I-77 the alarm went off with a slow leak icon, it scared the hell out of me when it went off. I picked up a nail and was able to pull off to a safe area and call GS road service, within 45 mins they had my spear on, but without the system I'm sure I would have had thousands of dollars of repairs needed. No way to tell what is going on back there until it's to late. I highly recommend any system, but get something, they do work..... I was coming home from the Tadpole Rally.
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Old 05-13-2016, 09:51 AM   #28
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Setting tire pressure at 80 psi in 50 degree weather on our first trip of the season a few weeks ago turns out to be a little more when you start out in 80 degree weather as occurred with us this week....noticed immediately they were reading more like 85-86 psi and after about 2-3 hours on the road we were reading 95 psi, very near my upper alarm limit...I know those tires can stand much higher psi's but still I stopped and made adjustments just for the ease of mind....the TST system is well worth the price as far as I'm concerned.
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Old 05-20-2016, 05:48 PM   #29
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Setting tire pressure at 80 psi in 50 degree weather on our first trip of the season a few weeks ago turns out to be a little more when you start out in 80 degree weather as occurred with us this week....noticed immediately they were reading more like 85-86 psi and after about 2-3 hours on the road we were reading 95 psi, very near my upper alarm limit...I know those tires can stand much higher psi's but still I stopped and made adjustments just for the ease of mind....the TST system is well worth the price as far as I'm concerned.
If by "adjustment" you mean you let air out of your tires that is the wrong thing to do. Tires should be set to the "cold inflation pressure" selected for your RV when the tires are cold.
Cold in this case means not driven more than 1 mile in previous couple hours or in direct sunlight in previous couple hours.

Tire pressure will change about 2% for every change in tire temperature of 10F and tires are designed to handle this for tires that are not overloaded or driven at speeds higher than their rating.

I have covered how to learn the proper inflation pressure and how to learn the desired cold inflation pressure a number of times on my blog. Some posts even show the math involved.

I really do not understand why some feel they need to establish an upper pressure limit. The important limits are Low pressure (anything below the inflation needed to support the measured tire loading. and the upper temperature limit which is about 155F for most TPMS from the factory.

Even on a 100 day an increase to 150F would only translate to about 10 to 15% rise in pressure and unless the tire has been damaged or improperly repaired ti should be able to handle a +15% in pressure.
Also you would need sustained speed at max rated speed and at or above max rated load for hours to raise the tire temp to 150 at the external sensor.
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Old 05-22-2016, 06:38 PM   #30
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If by "adjustment" you mean you let air out of your tires that is the wrong thing to do. Tires should be set to the "cold inflation pressure" selected for your RV when the tires are cold.
Cold in this case means not driven more than 1 mile in previous couple hours or in direct sunlight in previous couple hours.

Tire pressure will change about 2% for every change in tire temperature of 10F and tires are designed to handle this for tires that are not overloaded or driven at speeds higher than their rating.

I have covered how to learn the proper inflation pressure and how to learn the desired cold inflation pressure a number of times on my blog. Some posts even show the math involved.

I really do not understand why some feel they need to establish an upper pressure limit. The important limits are Low pressure (anything below the inflation needed to support the measured tire loading. and the upper temperature limit which is about 155F for most TPMS from the factory.

Even on a 100 day an increase to 150F would only translate to about 10 to 15% rise in pressure and unless the tire has been damaged or improperly repaired ti should be able to handle a +15% in pressure.
Also you would need sustained speed at max rated speed and at or above max rated load for hours to raise the tire temp to 150 at the external sensor.
Had been off the road for about 2 1/2 hours when my "adjustments" we made....simply reset all tire's psi before I got back on highway...tires were back to "cold" though they were now being set in 30 degree higher temperature outside that day than when they were set 3 weeks earlier in 50 degree weather.....thanks for your input.
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