Tpsm sensor

[Ed cole]

my warning light is always on due to running 30lbs. Besides a tire getting low is there any other reason to have them. Thx

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[Rahkmalla]

i'm not sure i understand the premise of your question.

Are you asking why you have tire pressure sensors as in could you take them out? Because the answer there is yes you can take them out, but then the truck will yell at you for a non-functioning TPMS system instead of TPMS sensors reading low. AKA doesn't solve your problem at all.

If that's not what you're asking than the answer to your question is "no, there is no other reason to have tire pressure sensors other than to detect tire pressure"

 

[TroutFishingInAmerica]

Use a Jscan to lower tire psi threshold and you should loose the annoying warning light and still monitor the tires.

 

[just_another_guy]

Changing the threshold is the same amount of work as disabling the tpms, so you might as well lower the setpoint and still have a functioning tpms system.

 

[ShadowsPapa]

Or - put more air in them. I bump them up
In fact, Firestone and some others say - bump the pressures up in the winter. Even Tirerack has an article about it and says yeah, it makes sense.
I add air in the winter.
I don't understand the resistance to doing that - people don't check or change tire pressures and figure one number fits all - when that's not entirely true - then complain about the TPMS (a federally required system)

Firestone says up the pressure.

Continental says this -
you also need to adapt your tire pressure checks to the seasonal conditions.

And further support - this is a quote from a tire seller -

And finally, all tire pressures are intended to be measured cold, which means when the tires are at the same temperature as the air outside. Unfortunately, unless you park your vehicle outside or in an unheated, detached garage, and measure its tire pressures first thing on dark, cold mornings, the influence of attached garages or higher ambient air temperatures later in the day often means that drivers are actually measuring tires that are not completely cold. In this case the 3-5 psi higher recommended inflation pressure increase helps offset the reduced tire pressures associated with the conditions in which the tire pressures are typically measured.

 

[ShadowsPapa]

Use a Jscan to lower tire psi threshold and you should loose the annoying warning light and still monitor the tires.

Technically you should put more air in the tires. I do. I follow the tire maker and sellers recommendations. I add air, then in the spring, I check again.
It's silly to put air in once a year on an 80 degree day and then assume "run it there all year long, regardless of the air temperature."
Car makers in some cases even say "add air".
My tires should be at 36 - so 30 is way too low in the winter - and when the temp drops more, they'll be 28 - and I notice it's stress on the PS at that point.
IGNORE what it goes up to 30 minutes later on the highway.
Set the pressure up for cold weather. It's truly that simple.

From Firestone - and they mention this in multiple places/pages -
TIRES
SHOULD I INFLATE MY TIRES IN COLD WEATHER?

7. INFLATE YOUR TIRES, IF NEEDED.
There's a good chance you'll need to inflate your tires in winter at least once. If your tire pressure is low, find your nearest air pump. Add air until you reach your recommended tire pressure, or visit your nearest Firestone Complete Auto Care and we'll inflate your tires for you.

 

[Lunentucker]

Dude is in Oakdale, CA.
He don't get winter ?

 

[Lunentucker]

You can remove TPMS or you can lower the thresholds to whatever you want. Some dealers will do it for you, or you can use any one of a number of devices.
I lowered mine with the ECRI.

https://ecri.app/

 

[ShadowsPapa]

Dude is in Oakdale, CA.
He don't get winter ?

Then his answer is simple - set the system parameters to deal with the lower inflation numbers that go with bigger tires. (must be a fair bit bigger'n stock to run pressures that low)

Otherwise, I know NORTHERN CA is the same latitude as half of Iowa so does experience "seasons". I've a friend who lives in the northern part and talks of snow and cold.

Dealers can lower the threshold,
but they can't disable TPMS or otherwise cause it to not work.
No business can legally or without possible liability in the future.

 

[RudeJeepin]

You can remove TPMS or you can lower the thresholds to whatever you want. Some dealers will do it for you, or you can use any one of a number of devices.
I lowered mine with the ECRI.

https://ecri.app/

After you set your tire pressure does the device have to stay plugged in to maintain it?

Nevermind, I found the info on their website. No you don't need to leave it plugged in.

 

[Lunentucker]

Then his answer is simple - set the system parameters to deal with the lower inflation numbers that go with bigger tires. (must be a fair bit bigger'n stock to run pressures that low)

The first issue is that NO Gladiator needs to be running stock Falken 33's, if that's what he's running, at 37 PSI. 33 was a good number for me when I had those.

Then when you do air down to say 20 for some moderate off-roading, the warning will activate.
If it's the second gen TPMS you have to go something like 5 over threshold to get them to clear the light.

So my BFG K02's in 35 (ish) are set for 29 cold, and I believe I set the threshold to 20.
I routinely toggle and check my pressures while driving, and I'll go to them and stay there if I hit something in the road that I didn't see or couldn't miss.

 

[ShadowsPapa]

The first issue is that NO Gladiator needs to be running stock Falken 33's, if that's what he's running, at 37 PSI. 33 was a good number for me when I had those.

Then when you do air down to say 20 for some moderate off-roading, the warning will activate.
If it's the second gen TPMS you have to go something like 5 over threshold to get them to clear the light.

So my BFG K02's in 35 (ish) are set for 29 cold, and I believe I set the threshold to 20.
I routinely toggle and check my pressures while driving, and I'll go to them and stay there if I hit something in the road that I didn't see or couldn't miss.

If I was aired down for sand or off-roading otherwise, I'd ignore the stupid sensors as I KNOW that I did it on purpose. That part should be easy. (I've done it before - you know you'll air back up in a while, so don't get upset with it)
The only thing one needs to even think about being concerned over is the difference in inflation of 25% or more. If they are even - you know it's no big deal. If one is at 22 and the others all around 30 - that's the problem.
Like I tell my wife on the first cold day we get when I know it's going to get warmer again before we really settle into the cold air from our friends in Canaduh, ignore it.
But that never really works, so I have to say "yes, dear, I'll fix it".............

You'd be amazed at the Jeeps running stock sizes. Your opinion on sizes. It must be a "I have to go bigger to impress or the guys will think I'm a wimp" thing, eh? (can't say I've seen a Gladiator in my travels with tires bigger than 35)
But that's a different topic- peer pressure vs. what's needed for the tasks at hand.

 

[WILDHOBO]

Technically you should put more air in the tires. I do. I follow the tire maker and sellers recommendations. I add air, then in the spring, I check again.
It's silly to put air in once a year on an 80 degree day and then assume "run it there all year long, regardless of the air temperature."
Car makers in some cases even say "add air".
My tires should be at 36 - so 30 is way too low in the winter - and when the temp drops more, they'll be 28 - and I notice it's stress on the PS at that point.
IGNORE what it goes up to 30 minutes later on the highway.
Set the pressure up for cold weather. It's truly that simple.

From Firestone - and they mention this in multiple places/pages -
TIRES
SHOULD I INFLATE MY TIRES IN COLD WEATHER?

7. INFLATE YOUR TIRES, IF NEEDED.
There's a good chance you'll need to inflate your tires in winter at least once. If your tire pressure is low, find your nearest air pump. Add air until you reach your recommended tire pressure, or visit your nearest Firestone Complete Auto Care and we'll inflate your tires for you.

I completely agree that more air needs to be added to maintain proper psi in colder temperatures. But 30psi being too low depends on the tire. Probably stricter for stock tires where the JT calls for 37psi cold. But my D load 37” tires call for 27psi cold. I adjusted them when temps dropped so that I’m at 27 in the morning. They get up to 30+ depending on temps and how long I drive, which ad you said, is perfectly fine.

 

[Lunentucker]

Oakdale is just a few clicks North of me in Latitude.
We usually get our lowest lows in mid January to early February @ -4 to -6
Oakdale's lowest lows appear to be around +39. Thus the palm trees.
I do bet they have to wear closed toe shoes and maybe even socks a few days a year when winter really bears down.

 

[kickingaz]

If I was aired down for sand or off-roading otherwise, I'd ignore the stupid sensors as I KNOW that I did it on purpose. That part should be easy. (I've done it before - you know you'll air back up in a while, so don't get upset with it)
The only thing one needs to even think about being concerned over is the difference in inflation of 25% or more. If they are even - you know it's no big deal. If one is at 22 and the others all around 30 - that's the problem.
Like I tell my wife on the first cold day we get when I know it's going to get warmer again before we really settle into the cold air from our friends in Canaduh, ignore it.
But that never really works, so I have to say "yes, dear, I'll fix it".............

You'd be amazed at the Jeeps running stock sizes. Your opinion on sizes. It must be a "I have to go bigger to impress or the guys will think I'm a wimp" thing, eh? (can't say I've seen a Gladiator in my travels with tires bigger than 35)
But that's a different topic- peer pressure vs. what's needed for the tasks at hand.

@ShadowsPapa, I run less air pressure in my tires and rather than choose an arbitrary number, I look at the tread pattern in dirt or run them through a bit of water on the driveway. If the tire is overinflated, the sides will show less than the centers and you will wear the center quicker. You can look at the crown of the tire as well but sometimes you can't see the small differences as easily.

I have 37" tires on my JTRD and 37 pounds is just too much. We have a lot of rock out here in AZ and we are not as flat as you are in Iowa, therefore we need the ground clearance for a lot of trails. It is not an "I have to go bigger to impress or the guys will think I'm a wimp" situation at all. I did a modest Mopar 2" lift to keep my center of gravity as low as possible and this works well for me (as I am sure it does for others with taller tires). Of course I run less pressure when we are off-road.

With all that being said I agree with you, as it gets colder (including here in the desert as it was 36 this morning) you do have to maintain whatever pressure you are running.

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