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Tire Leakage

connerd2002

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I have the 20x9 premium wheels with the all weather 265/35/R20 tires and they are losing pressure. Has anyone else had this issue? I lost 10 pounds in 2 weeks.
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Sofa King

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Are all of the tires losing pressure? how much has the outside temperature dropped in the past 2 weeks?
 

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Yes, how many tires are losing pressure?

Northern CA. I checked Madera's weather. The daily highs have seen a drop of 30 F in the last two weeks.

If all four tires are down, I suspect it's the drop in temperature. Thirty degrees is a pretty good swing.
 


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connerd2002

connerd2002

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Are all of the tires losing pressure? how much has the outside temperature dropped in the past 2 weeks?
Yes they all lost 10 pounds, and the weather has drop in temp 30 degrees.
 

Sofa King

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Yes they all lost 10 pounds, and the weather has drop in temp 30 degrees.
you will lose quite a bit of pressure with that temperature drop... add some air... when it warms up, you may need to remove some...
 

DarkkMatter

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I had the dealer use Nitrogen in mine.
Although had to still add about 3-4 psi to each tire. Since then it's been good.
Cold it'll sit at 29, but warmed up from driving 31-32 psi.
 

Rayman

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Try moving the valve stem around. Mine had the same issue but I could only hear the air come out after pushing it side to side.
You may also want to check that the internal valve is tight. You will need a special tool for that. Looks like this.

S650 Mustang Tire Leakage IMG_6539
 

steveo1960

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I have one slow leaker as well. Will drop about 4lbs every 3 weeks or so. I have a valve stem kit so that's first on my list. TBH I'm nervous about letting anyone touch it. Pinch welds etc...
 

LouG

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Try moving the valve stem around. Mine had the same issue but I could only hear the air come out after pushing it side to side.
You may also want to check that the internal valve is tight. You will need a special tool for that. Looks like this.

IMG_6539.webp
That's what the spit test is for. A drop of spit where the valve screws in will reveal leakage.
 

glenng6

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you will lose quite a bit of pressure with that temperature drop... add some air... when it warms up, you may need to remove some...
Two observations:
Number one: the tire pressure has probably been rather stable since the initial drop in pressure.
Number two: if the temps in your area will drop further this winter, you will have to add air again and in the spring remove air.
Number three: (I know I said two) Is this your first car?

Adjusting tire pressure in the Northeast is like a part-time job. Glenn
 

LouG

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Two observations:
Number one: the tire pressure has probably been rather stable since the initial drop in pressure.
Number two: if the temps in your area will drop further this winter, you will have to add air again and in the spring remove air.
Number three: (I know I said two) Is this your first car?

Adjusting tire pressure in the Northeast is like a part-time job. Glenn
Have you owned a bike? They're so pressure sensitive I checked tyres before every ride after I stopped commuting on them.
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