Forum Discussion

chracatoa's avatar
chracatoa
Explorer
Jul 07, 2015

25% increase in tire pressure during the day (above max)

So I had 50 psi on my tires before my trip. 50 is the max indicated on the sidewall. Temperature was around 70F or less. Later in the day it was around 100F and my TPMS was telling me 62 PSI. This ...
4X4Dodger's avatar
4X4Dodger
Explorer II
Jul 08, 2015
Many TPMS are unreliable, inaccurate and suffer from misreadings in all kinds of situations. I would not rely on them. To me they are just an "indicator", something to be viewed in terms of broad percentages.

But I agree with most here that the rise in psi you see is perfectly normal.

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