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Old 03-19-2014, 05:54 AM   #1
captbanjo
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Safe tire temperature?

I just installed the Tireminder on my RV. Addition to the pressure, it gives a tire temperature.

I have the controversial Good Year Marathons on my RV and I'm wondering what a safe temperature zone might be for them?
 
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Old 03-19-2014, 06:07 AM   #2
WaltBennett
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Although many will say there is none safe, I'd first look at the date stamp on each (numerical week/year) and get rid of them if they're more than 3 years old. Other than that, tires do get hot with road temperature, being forced to flex with lots of turns (that's why F1, Indy and other road racing cars zig zag so much when going slow on fresh tires), and when they start breaking down. I've been told that each is a little different according to their structure and tread design, and having the gauge on the stem puts it out away, but anything over 200 - 250 F means you've a problem. Below 150 on a warm day shouldn't be anything to worry about (but then you've those Marathons!).
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Old 03-19-2014, 07:03 AM   #3
DQDick
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I would be concerned with over 160 degrees. TST in their set up guide says this about the temperature setting: Also, we recommend you leave the temperature set at 157° Fahrenheit; tires typically fail between 180-200° Fahrenheit. Other tire care info, but not temperature settings can be found at: http://www.goodyearrvtires.com/pdfs/tire-care-guide.pdf
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Old 03-19-2014, 07:28 AM   #4
Tom S.
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The monitors are only a very rough estimate. Since they mount on the end of the valve stem, the reading do not reflect the true temperature of the inside of the tire. It's an OK feature, but be more concerned on the tire pressure as that is what creates heat in the first place. You can also use a thermal device to measure both tire temp and hub temps.
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Old 03-19-2014, 07:55 AM   #5
captbanjo
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If the monitors are only an estimate for the temperature is the same true for the pressure or is that more accurate? Thanks.
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Old 03-19-2014, 08:30 AM   #6
dieselguy
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My TST system is within a couple of pounds of my regular tire pressure gauge. Like mentioned, the sensor being out on the end of the valve stem may not read the hottest temp inside the tire. That being said ... I believe the temperature readings on these systems are accurate enough for the typical RVer ... we're not buzzing along at 300 mph+ at the salt flats.
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Old 03-19-2014, 11:48 AM   #7
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Quote:
quote:Originally posted by captbanjo

If the monitors are only an estimate for the temperature is the same true for the pressure or is that more accurate? Thanks.
The pressure measurement is fairly accurate, within a pound or two, at least according to my tire gages.
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Old 03-19-2014, 11:54 AM   #8
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Same here. I use the TST first to check pressure and then manually adjust when necessary. My high dollar truckers pressure gauge is always within a pound of what the TST is showing.
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Old 03-19-2014, 04:02 PM   #9
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I have never seen our tires go above 130 degrees on our rig with the TST monitor (even with outside air temperatures approaching 100 degrees). The are G614's but I do not know if that is a factor. Not sure why they would not read accurately as stated, heat tends to equalize the air inside of the tire, I would think it would be pretty accurate even if it is on the end of the stem. Just my rambling thoughts and opinion with no thermodynamic principles applied!
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Old 03-20-2014, 04:16 AM   #10
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X2 with Bingo. However, I have only seen around 120 degrees on mine but I haven't been on the road yet when it was 100 degrees out either. I don't drive over 65mph. I thought I read somewhere that anything over 180 degrees and tires may begin to fail, but I can't recall where I came up with that.
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Old 03-20-2014, 07:04 AM   #11
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I guess I should buy one of those infrared guns to start measuring the temps in my trailer tires at every stop after getting my new tires. This way when I get my TPMS system with pressure and temp , I'll know what the settings should be starting with right above the highest readings so far. I'm guessing the new tires would be indicating the typical readings on temps. I should buy one soon and practice on my truck since I use that so much already.

So the psi is critical when it gets too low. I'm guessing the temps are a concern when a programmed temp gets too high. If the temp gets too low, it's probably because the tire has exploded, the temp has dropped but the psi alarm better go off. I love technology.
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Old 03-20-2014, 03:46 PM   #12
DonandBonnie
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Had a tire guru tell us that tire temperature alone wasn't as important as watching temperature fluctuations between tires on the same vehicles. If one tire rode significantly hotter that the rest, then that tire was in danger of an impending failure.
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