TPMS - How Many Wheels?

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Mazda 3iT 2012
Thinking about getting a full size spare. How many wheels does the TPMS system
keep track of? Will it detect all five and keep track of them, or maybe just find
four, or will it get totally confused?
 
Good question, I think the TPMS system will read 5 wheels because look at Jeep, they have a full size spare... I'm sure there is a way to make it work, goodluck!
 
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