TPMS - Low Tire Pressure - JeepForum.com

 
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post #1 of 15 Old 06-01-2011, 08:27 AM Thread Starter
grimper
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TPMS - Low Tire Pressure

2011 JGC Overland 4x4 w/5.7 Did some riverbed riding yesterday with no issues. However this morning (6:15am) when I got in my vehicle and started it the TPMS Sensor went off "Low Tire Pressure". My tire pressure was reading FL=31,FR=31,RL=28 & RR=31. I drove it over to the gas station to fill it and it heated up a little giving it a reading of FL=35,FR=36,RL=31 & RR=35. I didn't see any obvious cracks. Should I be worried I have a slow leak? I have noticed that this tire is usually 1-2 psi lower than the others? Has anyone else had issues?

FYI This would make the 3rd stock tire I have replaced in 4 months. The first 3 were all the same wheel and were taken out by sidewall damage(Stock tires + offroad = ). I know I should put on some real off road tires and some steely's on but havent b/c of the expense.

I would love to hear some feedback.


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post #2 of 15 Old 06-01-2011, 09:19 AM
magr80
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WOW! I'm usually on top of all these things but on my Overland w/20" wheels, it's inflated to 40 -41 and that changes from time to time to 38-39. How much air goes in these tires? Did they overinflate the goodyears on my ride?
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post #3 of 15 Old 06-01-2011, 01:58 PM
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I am running right around that same range in my 20" tires as well @maqr80... @Grimper, is there any rim damage from your offroad excursions? Is there a dent or crack in the rim that might give you a slow leak at the bead seal? I have run into that on my steel wheels on the Rubi. Luckily they are easier to fix and if not fix, cheap to replace.
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post #4 of 15 Old 06-01-2011, 02:24 PM Thread Starter
grimper
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Quote:
Originally Posted by Chuckweed View Post
I am running right around that same range in my 20" tires as well @maqr80... @Grimper, is there any rim damage from your offroad excursions? Is there a dent or crack in the rim that might give you a slow leak at the bead seal? I have run into that on my steel wheels on the Rubi. Luckily they are easier to fix and if not fix, cheap to replace.

Maybe thats it? My rims are toast, they were 20's and they are just plain destroyed cosmetically from rock damage. 20" chrome rims should be an option on a 4x4 not standard.

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post #5 of 15 Old 06-01-2011, 03:24 PM
ternst
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I get frequent slow leaks that will often just go down into the 20's overnight and then stay there and never get any lower. Almost all the time it is due to a small bit of gravel that has worked its way deep into the tread, and then gets pushed into the airspace as the tread wears down. My Overland is six weeks old (6,500 miles, probably half of them on gravel county roads), and I've already destroyed two of the "special" off-road tires that I paid Jeep extra for. The only reason these tires are on my jeep is because my normal tires have been out of stock nationally, but they are back in stock and I'm finally getting to dump the "special" off-road jeep tires. The new tires (Hankooks), have special "rock ejectors" that seem to solve the gravel issue, plus they are really great tires on and off road and don't cost all that much, and best of all are available now for my 18" wheels.
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post #6 of 15 Old 06-01-2011, 04:07 PM
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Also check for a nail, our Liberty had these symptoms and discovered a small nail near the sidewall.
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post #7 of 15 Old 06-02-2011, 08:59 AM Thread Starter
grimper
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So I filled up my tires after work yesterday all to 35 PSI. After a few miles the TPMS reset itself and it held through the night. Thanks for all the feedback all just reminders/confirmations its time for steel and real tires


FYI I'm on this type of terrain almost everyday

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post #8 of 15 Old 06-02-2011, 07:37 PM
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May not be good on the tires, but it sure looks beautiful out there. Nice pic.

Sent from my DROIDX using JeepForum
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post #9 of 15 Old 01-18-2012, 12:56 PM
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My TPSM came on and the tire pressure was okay. Had the dealer rotate the wheels and they topped off the air pressure and told me to drive 5-10 for the TPSM to reset itself. After driving over an hour to get home the TPSM had still not reset itself. Any ideas??

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post #10 of 15 Old 01-18-2012, 02:04 PM
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In my wife's 70th Anniv. It had a faulty tire (20 inch Fortera). The pressure kept going down within 2 days of adding to 35 psi. By the third day it was at 20psi. They water tested and found no leak. I went to a Just Tires location (they ate owned by Goodyear) and they replace tire under warranty. The dealer wanted nothing to do with it.
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post #11 of 15 Old 01-18-2012, 03:57 PM
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My tires came inflated between 35-40 psi (18" Michelin Latitude Tours) from the factory and the TPMS says they are all "OK". The tire pressure rating on the door label says 33 psi.

I'm not sure if I should deflate them a bit or not since the TPMS says things are "OK" even with the tires at 40 psi.

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post #12 of 15 Old 01-18-2012, 04:38 PM
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Quote:
Originally Posted by superserialMBP View Post
My tires came inflated between 35-40 psi (18" Michelin Latitude Tours) from the factory and the TPMS says they are all "OK". The tire pressure rating on the door label says 33 psi.

I'm not sure if I should deflate them a bit or not since the TPMS says things are "OK" even with the tires at 40 psi.
I usually inflate to what the label on the door says...when the tires are cold.
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post #13 of 15 Old 01-18-2012, 07:31 PM
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i have noticed my in car gauge read 1 -2 psi higher than the 4 differnt gauges i have use on it. i like 33-35 in them
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post #14 of 15 Old 01-18-2012, 08:31 PM
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Quote:
Originally Posted by danteg View Post
In my wife's 70th Anniv. It had a faulty tire (20 inch Fortera). The pressure kept going down within 2 days of adding to 35 psi. By the third day it was at 20psi. They water tested and found no leak. I went to a Just Tires location (they ate owned by Goodyear) and they replace tire under warranty. The dealer wanted nothing to do with it.
Thank you. That is a very useful post should my right rear tire lose air again. I noticed it losing air slightly compared to the other tires, then after first noticing it, a couple of weeks later and one morning the tire pressure sensor chim went off and it had dropped from 35 psi to 29 psi. I filled up to 43 and left it and it slowly lost air. I took it in and the service department took it off and used soap and water, etc. and could not find any leak; they checked the valve stem too. It's now staying at 35 psi. Weird.
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post #15 of 15 Old 01-19-2012, 03:14 PM
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Quote:
Originally Posted by superserialMBP View Post
I'm not sure if I should deflate them a bit or not since the TPMS says things are "OK" even with the tires at 40 psi.
TPMS only cares about low pressure

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