TPMS sensor in spare tire

[APW]

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.

[SeaDog]

I have not heard of any from the factory TPMS that includes the spare, with that said there may be.

[The Evil Twin]

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.

[marinerjoe]

I have a TST cap sensor on both my truck’s spare and the camper spare. Both are programmed and are reporting.

[drburns]

The factory spare does not have a TPMS sensor in it.

[The Evil Twin]

Originally Posted by marinerjoe

I have a TST cap sensor on both my truck’s 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.

[marinerjoe]

Originally Posted by The Evil Twin

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’m less than 1/2 mile from the house where my compressor brings them back up quickly.

[emm-dee]

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.