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Old 10-03-2016, 11:39 PM   #1
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TPMS Question

Hello,

I would like to get some input from others who use a TPMS.

I have had my camper for a little over a year now. I finally got a TST TPMS. We had our first trip with it this past weekend. I was looking to get some feedback on the below numbers, PSI and Temp, It all seemed rather good, but I would love to hear from more experienced travelers if these numbers sound or appear to be accurate. Not ever having one of these system, I don't have anything from which to compare.

Not sure if this matter, but the current tires size is ST185/80R13 on a single axle. Cold inflated to 65 psi. On the way home, we had mostly sunny sky's with an ambient temp outside of 79 degrees. So on this 3 hrs drive both wheels basically averaged a PSI of 70-72 degrees with a temp of 88-92 degrees. Most of the drive was on highways with speeds around 60-63 mph.

Thanks in advance,

Mark
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Old 10-03-2016, 11:59 PM   #2
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In my sprinter cold pressure is 65 psi. My TMPS setting 58 low and 85 high. It was reading 79-80 psi in hot day. As long as it stay in between high and low setting than you are safe. Mine has running this way since August.
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Old 10-04-2016, 12:00 AM   #3
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Originally Posted by Dodaman View Post
Hello,

I would like to get some input from others who use a TPMS.

I have had my camper for a little over a year now. I finally got a TST TPMS. We had our first trip with it this past weekend. I was looking to get some feedback on the below numbers, PSI and Temp, It all seemed rather good, but I would love to hear from more experienced travelers if these numbers sound or appear to be accurate. Not ever having one of these system, I don't have anything from which to compare.

Not sure if this matter, but the current tires size is ST185/80R13 on a single axle. Cold inflated to 65 psi. On the way home, we had mostly sunny sky's with an ambient temp outside of 79 degrees. So on this 3 hrs drive both wheels basically averaged a PSI of 70-72 degrees with a temp of 88-92 degrees. Most of the drive was on highways with speeds around 60-63 mph.

Thanks in advance,

Mark
Sounds about right to me, My trailer tires are 65PSI also and thats sounds pretty average of what I also see....
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Old 10-04-2016, 06:15 AM   #4
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Your temperatures sound about right. I have a Schrader system I use on my toad dolly, two sensors in the dolly wheels, two sensors in the rear wheels of the car.

These are internal sensors, not the valve stem typs.

On a recent trip in Arizona, coming down a long grade, we had a tire temperature alarm on the dolly, it was approaching 200 deg (115 outside air temp). After stopping, letting stuff cool, I discovered I had a brake caliper that was hanging and dragging on the dolly.

The other tire temps would hang around 20 - 30 degrees above the outside temperature.
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Old 10-04-2016, 06:15 AM   #5
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I will often see an 8-10 pound rise in psi and temps of 90-95 or even 100 on very hot days. The tires on the sun side are always a couple degrees warmer.
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Old 10-04-2016, 11:14 AM   #6
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Sweet. Just wanted to see if what I was seeing was normal. Now I know. I was rolling through that bad rain in Delaware on Thursday and noticed the tire getting hit with the rain was a lot cooler. Pretty cool.. Anyway, now time to get ready to do some cold weather camping. Gotta love it😀

Thx again
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Old 10-04-2016, 01:06 PM   #7
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So what is the average danger temp on tires????
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Old 10-04-2016, 02:24 PM   #8
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I can't remember the exact temp. But I recently read a Michelin study that said 180-185 I believe with the max temp when tires fail. I'm sore Tireman can give more details. The TST 507 has preset temp at 158.
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Old 10-04-2016, 02:31 PM   #9
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So what is the average danger temp on tires????
Most tires fail at 150 degrees and above, that is why TST presets there temps between 150 and 185 if I remember right, but you can change that if you want but I'll stick with what they suggest....
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Old 10-04-2016, 03:27 PM   #10
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Good answers. Set at 140 and keep an eye out after that.


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