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Old 08-07-2021, 05:20 AM   #1
Join Date: Dec 2020
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TPMS Dually Rear Tires

Good morning, if you only had 2 monitoring caps for the rear wheels which tires are most important, inside or outside? Thank you
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Old 08-07-2021, 06:19 AM   #2
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I notice that the outside ones increase in pressure faster as you drive longer.

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Old 08-07-2021, 12:58 PM   #3
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The outside ones increase the pressure faster because sometimes the sun hits them. However, I would use them in the inside as they take more work in my opinion.
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Old 11-15-2021, 07:55 AM   #4
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TPMS Dually Rear Tires

OK, I'll play;
Put them on the ones that will get cut from road debris or pick up a nail, heh, heh. Sorry, couldn't resist.
At 40k miles, I had an inside dual with a slow leak picked up by TPMS, which prompted me to stop by a tire store to find the nail. What they found was a knot on the inside sidewall that they said was typical of impact damage from a curb or pot-hole. I would never have seen it, being on the inside, and it would have eventually failed, bringing all the danger and drama that doing a tire change on the freeway shoulder brings.
Also, pressure is a little more difficult to check on the inside tire, so if I HAD to choose, it would be the inside tires, while waiting for the other two sensors to arrive.

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Old 11-15-2021, 12:44 PM   #5
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A TPMS is an early warning device. So is the human eye. If I had a truck/coach with dual wheels I would put the "early warning device" on the wheel that is hardest to see or "kick".

It would be best to have sensors on ALL wheels.
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Old 11-15-2021, 12:53 PM   #6
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I agree with @TitanMike. TPMS all around.

Additional sensors shouldn't be that expensive. I pay $50 per valve stem for our TPMS (PressurePro).
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tire, tires, tpms

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