All 4 tires, pressure loss.

[jorgy_bc]

All 4 tires are losing 4-5 psi/week, with a variance of about 0.5 psi between them.
I'm suspecting the valves.
No signs of being spiked and it hasn't been anywhere I'd worry about nails, screws etc..
Seems to have started as the weather has cooled off.
Anyone had similar issues?

25' Lariat bap w/ 19" oe wranglers
and 5,000km on it.

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[CaReviews]

Depending on the temperature differences, this is normal. Tire pressure fluctuates with ambient temperature, for every 10 degrees youll either gain or lose a PSI

 

[jorgy_bc]

I wasn't clear enough.
It's a continuing issue. Fill tires to 36 and 6-7 days later down to 32.
4 weeks now and all 4 tires.

 

[710-oil-614]

I've got 11k miles - just swapped out my Territories for Wildpeak AT Trails but didn't experience the issue before the switch and I'm holding steady at 35psi on all 4 after new tires installed.

 

[MakinDoForNow]

I wasn't clear enough.
It's a continuing issue. Fill tires to 36 and 6-7 days later down to 32.
4 weeks now and all 4 tires.

Put max pressure in a tire (51 psi?) submerge in Water or soap them. New install on new rims?. Might just soap valve stems first. Possible beads are not seating properly on rims?
ETA: I had one oem that the valve stem core was not seated tightly and was leaking about 4lbs a week.
ETA: I have had 2 psi higher pressure in tires parked on sunny side of truck.

 

[First Sergeant]

Just curious, looking at the truck TPMS, or hand held gauge? My TPMS reads about 2 psi lower than from a certified gauge I have. They are consistent though and do not change. Also, if they drop to 32, do they continue dropping less after that? Kind of a strange issue actually, once the outside temp stabilizes. Are you filling tires in a garage where temps are somewhat warmer and then checking them outside in colder temps?

 

[OleFordGuy]

I wasn't clear enough.
It's a continuing issue. Fill tires to 36 and 6-7 days later down to 32.
4 weeks now and all 4 tires.

I had a similar issue about 4 months ago except it was only one of the rear tires. Aired it up 3-4 times and would slowly leak down. Carried it to the tire shop, they liked to never have found it but finally got it. It was a very small nail about the diameter of a sewing needle. They fixed it and haven't had anymore issues since. But that's really strange for a 4 doing the same thing!

 

[jorgy_bc]

Just curious, looking at the truck TPMS, or hand held gauge? My TPMS reads about 2 psi lower than from a certified gauge I have. They are consistent though and do not change. Also, if they drop to 32, do they continue dropping less after that? Kind of a strange issue actually, once the outside temp stabilizes. Are you filling tires in a garage where temps are somewhat warmer and then checking them outside in colder temps?

Going by both, actually by 3 different
ways, tpms off by 1 psi.
I'm refilling at 32, suspect it would continue though.
All readings done cold, outside in about the same temps +/- 1 or 2 degrees.
Have never seen this 40 years driving,
(all 4, about equal)

Maybe some punk at the mall braced nails under the tires. Strange they are all leaking about the same rate for sure.

 

[ianjay]

No mystery. You have four tires that are leaking. Tread, bead, valve system. Has to be one of the three. Since they are all leaking about the same, a close examination of one tire might find the problem. I assume stock wheels so don't forget to see if the rim itself is defective and is porous. Use lots of soapy water and put the air pressure way up.

 

[Cancunbadlands]

Check the valve stem core

 

[ValenciaOrange]

If there in an America’s Tire close by, go and ask them to check your tires. They will do it for free.

 

[MakinDoForNow]

If there in an America’s Tire close by, go and ask them to check your tires. They will do it for free.

Or Tire Rack, both and others owned by Discount Tire....

 

[MaverickDragon]

It's a continuing issue. Fill tires to 36 and 6-7 days later down to 32.
4 weeks now and all 4 tires.

So all four have the same slow leak...
As others have suggested, check that the Schrader valves are screwed in properly.
A bit of soapy water on the valve stems might show you something.
Losing about 4 PSI in a week may mean that a soap water bath may be the only way to spot it.

OTOH, do you have a neighbor who is trying to drive you crazy??

 

[MakinDoForNow]

So all four have the same slow leak...
As others have suggested, check that the Schrader valves are screwed in properly.
A bit of soapy water on the valve stems might show you something.
Losing about 4 PSI in a week may mean that a soap water bath may be the only way to spot it.

OTOH, do you have a neighbor who is trying to drive you crazy??

It's something like the installation of the valve cores are all being installed at the same inadequate pressure. Or????

 

[MaverickDragon]

It's something like the installation of the valve cores are all being installed at the same inadequate pressure. Or????

The odd thing is the truck (apparently) started having the issue 4 weeks ago.
The OEM tires have 3K miles on them.
It's pretty odd to have all four with the same pressure leak some maybe 10 months later...

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