Tire pressures for 37s
- Thread starter BillArnett
- Start date
BillArnett
New member
Your dealer is mistaken. I was able to set the TMPS to 20 psi with a Tazer JL.
Maybe but I stood next to him and as low as it would go was 27. Maybe a fiat safety? The tazer would bypass that.
You're lucky that your dealership was able and willing to lower your TPMS at all.
A dealership will NOT have access to a Tazer JL and they would NOT be allowed to set your TPMS lower than what Jeep recommends.
BillArnett
New member
Good reason to get your own Tazer :yup:
Yeah the lowest Jeep
Let’s it go is 27#. Which works perfectly since 28 is where I run. That way it reminds me to air up. Or if a problem exists.
BillArnett
New member
Maybe I’m confused (again 
. Until I get a chance to do some more careful testing I’m running 25 psi street pressure. So I set the TMPS to 20 thinking that that would be the level at which it would give me a warning. But when I was aired down to 15 for the dirt the TMPS warning said (paraphrasing): “blah blah blah air up to 20”. So maybe the setting is supposed to be the normal pressure not the warning threshold? And it then gives a warning at some unspecified level below that?
I suppose I could experiment. But that’s tedious.
. Until I get a chance to do some more careful testing I’m running 25 psi street pressure. So I set the TMPS to 20 thinking that that would be the level at which it would give me a warning. But when I was aired down to 15 for the dirt the TMPS warning said (paraphrasing): “blah blah blah air up to 20”. So maybe the setting is supposed to be the normal pressure not the warning threshold? And it then gives a warning at some unspecified level below that?I suppose I could experiment. But that’s tedious.
What I can tell you is this. When we got our JL, the tires were aired up to 40 psi. After airing down for the first time, the TPMS said to air back up to 37 psi. Being that gauge on my compressor sucks, I only got them up to about 35 psi but that seemed to be enough to turn off the warning light. I should note, this was all done back when we were still running stock. As you have seen as well, I'm guessing there is a threshold it works within and not some kind of set number.