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aluminum wheels corosion
11-27-2011, 08:13 PM
Post: #1
aluminum wheels corosion
I have a 2000 t/c mini van. the aluminum wheels have coroded on the tire bead area enough to cause leaks. I have taken them and had cleaned and the tires reinstalled. it lasts about a year. is there anything to seal the aluminum after cleaning the corosin off? I plan on useing a scuffy pad on my high speed grinder.
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11-28-2011, 11:01 AM (This post was last modified: 11-28-2011 12:16 PM by Rupe.)
Post: #2
RE: aluminum wheels corosion
The real issue here is the metal has become porous so moisture continues to seep into that area which brings back the corrosion over time. The fix is to sand blast the wheel clean then paint / clear coat it again, with special attention to that area. The cheap / easy way is to buff it up as you suggest then run a bead of clear RTV around the sealing surface before inflating the tire. Neither fix will be perfect (cosmetically) but at least the small pits will be sealed and the tires will stop going soft every few weeks.

BTW, I learned this trick from an old timer at a lawnmower shop years ago. His customers always complained of soft tires falling off the rim after their yard equipment sat over the winter. The RTV trick really works well as long as the tires are not dry rotted on the side walls, in which case the tire is shot anyway.
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11-28-2011, 08:13 PM
Post: #3
RE: aluminum wheels corosion
I have heard of a sealent that tire shops use when installing tires on rims. I cleaned the corosion with a scuffy padand then I had some aluminum colored rustoleum paint, brushed it over the coroded area of the rim. I'm gonna let it dry over night and then have the tire remounted.I figured that anything that will seal that area is better than nothing.
I will post later and let everyone know if it works
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11-28-2011, 09:57 PM
Post: #4
RE: aluminum wheels corosion
From my experience you have two things to consider. The first is just how rough that surface is. The second is if this is a used tire being mounted again then the bead area may not be as soft / pliable as a new tire. IOW, the tire is off right now so a light coating of silicone to fill that void would be the smart way just to avoid doing the job a second time. You could even use blue or red silicone gasket sealer if you have some laying around. Just do a quick wipe of whatever sticks out after the bead is seated. The stuff the tire shop may have will work too... if they have any. Some shops do not!
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11-28-2011, 10:31 PM
Post: #5
RE: aluminum wheels corosion
(11-28-2011 09:57 PM)Rupe Wrote:  From my experience you have two things to consider. The first is just how rough that surface is. The second is if this is a used tire being mounted again then the bead area may not be as soft / pliable as a new tire. IOW, the tire is off right now so a light coating of silicone to fill that void would be the smart way just to avoid doing the job a second time. You could even use blue or red silicone gasket sealer if you have some laying around. Just do a quick wipe of whatever sticks out after the bead is seated. The stuff the tire shop may have will work too... if they have any. Some shops do not!

I'll give some rtv a try... thanks so much!!
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12-02-2011, 11:06 AM
Post: #6
RE: aluminum wheels corosion
three days still holding air!!
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12-09-2011, 11:56 PM
Post: #7
RE: aluminum wheels corosion
It's been another week. Are we still holding air?
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