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Old 04-20-2014, 11:46 AM   #1
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Tire Temperature

I bought the TST tire monitoring system a couple weeks ago. I'm planning to install it before I pull out next week. The owners manual does not provide a recommended upper limit for the tire temperature before the alarm goes off.
Does anyone have experience with the maximum temperature for a tire?
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Old 04-20-2014, 12:08 PM   #2
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Default setting on my TST unit is 158 F. That is what is written in the manual. I have set mine at 130 F, as after a few years of use, tires temperature never exceeded 110 F on my trailer.
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Old 04-20-2014, 12:54 PM   #3
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You'll see a typical max of about 30* over ambient if you're inflated properly, and it will very a bit more than that on a hot sunny day that gets the pavement really hot, 100* ambient will see up to about 50* over.
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Old 04-20-2014, 01:02 PM   #4
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Having used my TST for over a year and towing in 90+D ambient, I've never experienced anything over 115D. The default is 157D or 158D, so I set mine at 120D I think. I have found they will jump 5D real fast and then just ease up another 5D to 8D. I've found out a rest stop of about 20-30 minutes will cool them pretty quickly. I think the TST manual says the tire companies claim the tires start breaking down at 180D.
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Old 04-20-2014, 01:16 PM   #5
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Last year, before my Tireminder system failed, the max temps I saw on my tires was around 115. But when I set up my new TST sensors in a week or two, I will leave them at that 158 degree setting.

Honestly, not sure if temp is an important factor to monitor if you are monitoring the air pressure and making sure its cold setting is correct before pulling out and that it goes up normally during a trip and never starts to reduce while traveling.

Vehicle manufactures do not monitor the temps of the tires with the Federally required TP sensors.

I guess temps could start going up if a bearing starts to go bad causing more friction.
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Old 04-20-2014, 01:45 PM   #6
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Temp is handy for wheel & brake info also,it transfers to the tire. Also the (Sun Side) will read higher temps going down the road. Youroo!!
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Old 04-20-2014, 05:40 PM   #7
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Actually factory TPMS sensors do relay tire temp to the vehicle, but only pressure is actively reported.

Honestly, you'll rarely see anything worth noting temperature wise. If a tire starts cooking it's either the hub/brakes burning it up, which is very helpful when it happens, or the tire is running out of air and is about to blow due to sidewall flexing. But, you should have heard the pressure alarm long before the sidewall started heating up noticeably.
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Old 04-20-2014, 05:55 PM   #8
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Watch the pressure and temp rise if you go down a mountain and are using the brakes, they both will be higher at the bottom than at the top of the mountain.
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Old 04-20-2014, 06:55 PM   #9
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Quote:
Originally Posted by SKnight View Post
Actually factory TPMS sensors do relay tire temp to the vehicle, but only pressure is actively reported.
Let me rephrase. My GM sensors do not monitor the temperatures inside the tires. And FMVSS 138 (mandated by the TREAD Act) does not have a requirement for the monitoring of temps (or altitude) inside the tire. However, in the early days of the formation of FMVSS 138, there was a temp requirement but the Federal government dropped it since testing showed it meant nothing and added a complexity to the system that was not needed. However, I guess some manufacturers might use it.
And even GM might use it sometime in the future, but so far, not on any Silverados/Hummers up to 2013.


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Watch the pressure and temp rise if you go down a mountain and are using the brakes, they both will be higher at the bottom than at the top of the mountain.
Really have to heat up those brakes since the general formula is 1 lb increase in TP for each 10 degrees F in temps.

But honestly have never monitored the tire temps while coming down any of the high passes in CO/UT/ID/WY or MT. I downshift, only time I have had to apply brakes is if I come up on a slower moving vehicle and can't get around it due to heavy traffic in the passing lane.
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Old 04-20-2014, 07:03 PM   #10
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Quote:
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Watch the pressure and temp rise if you go down a mountain and are using the brakes, they both will be higher at the bottom than at the top of the mountain.
Interesting! Never thought of that. And it is likely to be warmer at the bottom too.
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