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Old 05-22-2014, 05:24 PM   #1
woodman
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TPMS

Because there has been so much discussion on Marathon tires imploding, I felt inclined to heed the advice of many of you to install a TPMS to monitor my tire pressures and heat generated during my travels. Everything seemed to be going as anticipated in my most recent trip until we ran into a severe thunderstorm with gusty winds, hail and heavy rain while on a major interstate corridor. I decided that due to the poor visibility and the high winds, it would serve me well to pull off the main road and park on an interchange access. I pulled over at the very next interchange and stopped. While waiting for the weather to pass, the TPMS began alarming that one of the tire pressures was failing. I got out of my truck during the pouring rain and did a visual inspection of all the tires. Clearly, nothing seemed to be out of the normal and I remained perplexed about the alarm. Eventually, during the wait for the weather to clear, the alarm monitor ceased and we continued on our way without further incident. I deduced that the alarm was caused by cold water from the rain and hail, and that dropped the pressure precipitously which, in turn, led to the miscalculation of the alarm. The message here is like an old Confucius saying, "One look worth thousand thinks". In other words, technology is not perfect and don't become too reliant on it.
 
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Old 05-22-2014, 05:33 PM   #2
rohrmann
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If the temperature in the tire had cooled sufficiently, from the hail and rain, it very well could have lowered the pressure in the tire enough to cause the alarm to sound. Once the storm passed, the tire warmed slightly to bring the pressure above the alarm setting.
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Old 05-22-2014, 06:20 PM   #3
Drifty1
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I noticed on my unit the other day when I was lowering the rear tire pressure it set my alarm off but then it cleared itself. I think it will alarm if the pressure falls slowly even if it still above the alarm point.
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Old 05-23-2014, 03:13 AM   #4
1retired06
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I think the benefits far outweigh the occasional glitch.
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Old 05-23-2014, 04:23 AM   #5
BB_TX
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Makes sense that traveling at highway speeds on an interstate and tires warmed up and then suddenly stopping in a cold rain/hail storm that the temps would drop fast enough to generate an alarm. Good test to show that the rapid loss of pressure alarm does work.
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Old 05-23-2014, 12:16 PM   #6
DQDick
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With Marathons on the rig, getting wet is a small price to pay for having some idea what those tires are doing.
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Old 05-24-2014, 02:01 AM   #7
DonandBonnie
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Sounds like the monitor worked exactly as intended by detecting a rapid pressure change. I've mentioned this on other threads. Last year our monitor showed 26# on an inside dually. Did the tire kick and couldn't detect a flat. The outside tire supported the weight so we drove to a tire shop. The shop folks couldn't visually detect a flat either. They pulled the tire and sure enough there was a nail in it. The monitor paid for itself right there.
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