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Author Topic: Aluminum Rims and Slow Loss of Tire Pressure  (Read 1028 times)

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Offline ChrisKD

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Aluminum Rims and Slow Loss of Tire Pressure
« on: November 22, 2010, 08:02:23 AM »
What do you guys do about those damn aluminum wheels to keep them from bleeding off the air inside the tires?

I swapped the 30's from the Steel Wheels on my old W50 to the Aluminum Wheels on my Dakota (different bolt pattern or i would have reused my steel wheels) and prior to mounting the 30's i replaced all the valve stems, cleaned the wheels and checked the bead on each tire.

Over the course of about 4 days (at a time) i have to air up my tires again. Not just one tire, but all of them at the same time. When they were on the steel wheels i rarely had to even check the tire pressure, with the aluminum ones i constantly have to check them.

I went over the bead, sidewalls, tread and the valve stems with soapy water to check for a slow leak, but there is none to be found
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Offline madurobob

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Re: Aluminum Rims and Slow Loss of Tire Pressure
« Reply #1 on: November 22, 2010, 08:36:14 AM »
Its probably the bead.  If its painted or too polished it can have a problem holding air.  Tire shops have a sealing goop they often brush around the tire and rim beads so it will seal completely.  If someone mounted these for you, you may be able to get them to re-mount them for free or at a steep discount if they didn't use the bead sealer.
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Offline cjohhny

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Re: Aluminum Rims and Slow Loss of Tire Pressure
« Reply #2 on: November 22, 2010, 09:44:14 AM »
Double check your valve stems to make sure the cores are seated all the way.  Had a similar problem on my Utiline on 2 of the tires and the tire shop told me that's what it was.
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Offline DODGEBOYS

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Re: Aluminum Rims and Slow Loss of Tire Pressure
« Reply #3 on: November 22, 2010, 10:00:49 AM »
yup bead sealer go,s a long way with aluminum rims / l also use the bead sealer when l put the rubber valve stems in
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Offline ChrisKD

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Re: Aluminum Rims and Slow Loss of Tire Pressure
« Reply #4 on: November 22, 2010, 10:24:47 AM »
I mounted the tires myself here at the shop. I'll pop em off the wheels and hit the bead with some sealer. Didn't think about it at the time, since all my other vehicles run Steel Wheels.
76 Ramcharger 318/727/203
48 Dodge Pickup
83 Scamp GT 2.2 Turbo AWD
92 Dakota 5.2/518/231
84 PW50 273/727/100/203
74 Duster 6-71 Blown 340/833/D60
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73 Dart Sport 340/833/8.75
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71 Duster : Viper V10/6-Speed/8.75
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Offline 76dodgeboy

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Re: Aluminum Rims and Slow Loss of Tire Pressure
« Reply #5 on: November 22, 2010, 10:43:52 PM »
New valve stem and clean bead and use bead sealer
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Offline OldGreyRamcharger

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Re: Aluminum Rims and Slow Loss of Tire Pressure
« Reply #6 on: November 22, 2010, 11:57:46 PM »
Make sure the bead surfaces are clean on both the tire and rim. Rough up the surfaces with a little sandpaper or a grinder as well and use some bead sealer.