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Old 10-30-2020, 08:33 AM   #1
APW
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TPMS sensor in spare tire

I just purchased a 8332 sig, I set up the TST for the four tires. I did not try to set up the spare mostly because I forgot about it.Now I am wondering if the spare has a sensor. I am not close to the trailer to check it.
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Old 10-30-2020, 08:36 AM   #2
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I have not heard of any from the factory TPMS that includes the spare, with that said there may be.
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Old 10-30-2020, 08:46 AM   #3
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Most sensors go dormant when they are not moving. So a spare tire sensor wouldn't do much good. I do know that when running on a spare (blown tire stored in the truck) the sensor shows as not communicating. So the bouncing doesn't wake it up. Not saying it is impossible though.
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Old 10-30-2020, 09:31 AM   #4
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TPMS sensor in spare tire

I have a TST cap sensor on both my truck痴 spare and the camper spare. Both are programmed and are reporting.
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Old 11-01-2020, 04:12 PM   #5
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The factory spare does not have a TPMS sensor in it.
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Old 11-01-2020, 09:23 PM   #6
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Quote:
Originally Posted by marinerjoe View Post
I have a TST cap sensor on both my truck痴 spare and the camper spare. Both are programmed and are reporting.
Good to know. My internal sensors only work when moving. I would be curious as to if I could train one of those to my system. I'm not so concerned with the spares because I check them twice a year but it would be nice should one need to go into service.
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Old 11-09-2020, 06:15 PM   #7
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Quote:
Originally Posted by The Evil Twin View Post
Good to know. My internal sensors only work when moving. I would be curious as to if I could train one of those to my system. I'm not so concerned with the spares because I check them twice a year but it would be nice should one need to go into service.

My factory installed TST internal sensors report without being moved. When I get to the storage lot, I power up the display, and before I get connected and start pulling out, they start coming online. I know because I have had low pressure warnings start sounding. Fortunately I知 less than 1/2 mile from the house where my compressor brings them back up quickly.
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Old 11-09-2020, 07:48 PM   #8
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I have a TST sensor on the spare now. Last year I had to use the spare to replace a blown tire. Unfortunately the spare only had 49 psi...should be 80. No place to get air so I limped home via back roads at less than 50 mph. Due to the low pressure the tire was driven about 50 miles severely overloaded. Cost a bunch to replace but still had to discard that tire.
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