Another thread about tire pressure

[azjl#3]

I disagree. Look at the PSi on the Rubicon door jam. They state tire pressure to be 37psi for both the 33” standard Rubicon and the Xtreme Recon 35” tire. They didn’t do any figuring there.

we can disagree, but since i started using door jamb pressure, no scalloping cupping. I dont think it drives better lower pressure, maybe softer, but not better, i also know mpg suffers at lower pressure.

you do you, im happy.

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[zouch]

you’re fine.
what part of your tire touches the road when you’re driving on perfectly flat concrete has little-to-nothing to do with what part of the tire is touching the ground during the tires actual use or wear on the road. (this is why the ‘Chalk Test’ is irrelevant.) real roads are neither flat, nor straight, and the ‘Chalk Test’ also fails to make any considerations for how hard you might corner.

note that some Mfrs even promote how their tires are crowned in the center so that there’s less rolling resistance and better MPG.

i’d support someones suggestion to inflate your tires up to where the TPMS nanny suits off, and deflate back down to about where you’re at.
if you’re impatient and like to fiddle with such things, you can watch the PSI after you get them up to hwy speed for a good long while (hour’ish?) and see if they’re warming up enough to where the PSI comes up more than ~ 10%; this would indicate too low of a Cold Pressure to start with.
running tire pressure too low and generating heat by flexing in the sidewalls is damaging to tires.
remember the Explorer tire failure scandal of years ago? that was eventually attributed to SoccerMoms overloading neglected, under inflated tires and hitting the hwy at questionably legal speed for extended drives and the resultantly overheated tire sidewalls being damaged to the point of failure.

otherwise just monitor the tread wear, and adjust as necessary.

FWIW, i’ve gotten ~60K miles out of several sets of (5) BFG Muds before i sold them off with what i call ‘Street Tread Depth’ just by monitoring PSI and 5 wheel rotations at Oil Changes.

While pulling my 2024 JL XR with 35s into the garage, I noticed that only the center portion of the tire is making contact with the ground as you can see in the picture. Currently the low pressure sensor says to inflate my tires to 37. I have them inflated to 34. This tells me that I'm still running too high of pressure and should probably drop it to around 32 or 30. Searching on the forums it seems like most people with 35s are running around 32. Does this look like too much pressure? And if so, what's the easiest way to change the low pressure warning threshold.

Thanks!