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Old 08-31-2008, 10:11 PM   #11
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how long ago did you get the tires put on, how long are the stems, and what kind of wheels do you have? I ask because I've seen cracks develop in stems earlier than expected on medium and long stems (usually for steel wheels to extend past the hub-cap) because at high speeds, the stem bends outward from centrifugal force. I've also seen it from using the red/green pressure indicator valve caps (even on short stems) because they're so heavy. *this is over the course of 6 months+ tho. usually stems last 2-5 years (Depending on conditions)
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Old 09-15-2008, 10:51 AM   #12
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Originally Posted by kamesama980 View Post
-over 1psi/month should be looked at.
-if a shop doesn't replace your valve stems with a new tire, take your stuff and get out.
-leaking or not, check your tires at least every month. that way you find out if you have a leak before it's visible (which is pretty low for most people).

I've found aluminum rims are usually OK for the first set of tires or 5 years. once they've been ground with a brushwheel to clean them or regular weathering for a few years they usually need to be cleaned/sealed every 2 years. (unless you have chrysler rims, then it's every 10 months. or chrysler chrome rims then it's every 3)
How do you go about cleaning and sealing them? I have gone through 2 sets of Chrome Lexus Rims so far in just about 2 years. After winter they're always peeling and if I replace the tires they will not hold. No matter how much I grind and how much I goop them they leak. At this point I don't care how ugly they are but a good way to clean them or some kind of paint or sealer that I can let setup before I put the wheel on (like creating a new sealing surface on the rim) would be great.

Everyone is shocked that OEM Lexus rims would do that, I have no idea, I just wish I got the Alloys instead but they're always pricey used when I look.
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Old 09-15-2008, 11:38 AM   #13
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I have heard that a bead of hardware store silicone caulk on the outside of the bead can take care of this sort of problem- but I haven't ever tried it myself.
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Old 09-15-2008, 12:52 PM   #14
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Originally Posted by kamesama980 View Post
-if a shop doesn't replace your valve stems with a new tire, take your stuff and get out.
On the new TPMS valves, they don't need to be replaced.

Re-designed maybe, but theoretically not replaced.

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Old 09-19-2008, 03:45 PM   #15
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nitrogen has almost no oxygen, this lessens the chance for corrosion on the inside of the rim bead. no oxygen=no corrosion.
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Old 09-20-2008, 12:54 PM   #16
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nitrogen has almost no oxygen, this lessens the chance for corrosion on the inside of the rim bead. no oxygen=no corrosion.
by definition nitrogen has no oxygen, because its nitrogen and not oxygen

anyway, i bet the rims/wheels are cracked.
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Old 10-15-2008, 07:12 PM   #17
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Have you checked every par of the tire? Maybe there's a cracked from age hat allows some air to slowly escape. I was thinking maybe the stem valve might be failing too.
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