Thread: TPMS Sensors
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Old 05-10-2018, 09:46 AM   #239
Tcoat
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Quote:
Originally Posted by new2subaru View Post
From what I've read you get a dash light when the tire(s) are 25% low.

(25% LOW ON AIR)

What are the point of these things again?
I have had mine go off with as little as 3 or 4 PSI below the 35 that they are set for. Even had them triggered by a cold night but when they warmed up they were bang on 35 so not sure where this 25% number came from.
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