Sealing those pores aluminum rims


#1

can I spray paint the inside of my aluminum rims ,they have become pores and leak air very slowly about 5 pounds psi per month .?sealing those pores aluminum rims


#2

What makes you think your aluminum rims are porous?

5 PSI per month of pressure loss could be caused by a long list of things, such as a drop in temperature or bent rims or normal attrition. If you can tell me why you think your aluminum rims are porous, I might have some suggestions for identifying the real cause of pressure loss.

While 5 PSI of loss in a month is a little higher than normal, it isn’t that abnormal. If I put off checking my tire pressure a whole month (rather than weekly), I have to put air in the tires too, and my rims are steel.


#3

Like Whitey, I wonder if you’ve ruled out all other causes first. If you spray the tires and valve with soapy water, do you see any bubbles anywhere?


#4

I love it (not!).
OP asks a simple question.
In return he gets assumption and aggressive skepticism.
Yes paint should at least slow down the leak.
Just do a good preparation: clean thoroughly, sand lightly and use metal primer to make sure it sticks.


#5

I’m not sure what makes skepticism about a piece of aluminum as thick as a rim being porous “aggressive.” Do you think aluminum rims are porous?

Even aluminum foil isn’t normally porous, so I’m not convinced these rims are porous. Are you? If so, why?


#6

More skepticism : are you saying all four are leaking ?
I think paint would be temporary at best. I would call a wheel specialty shop and see if they have a solution.


#7

I think paint would only be temporary, but if you decide to try this I’d recommend clearcoat. It’s thicker, self-leveling, and there won’t be any overspray issues.


#8

It’s probably corrosion where the bead meats the rim from salt.


#9

good idea .thank you


#10

see what happened is the chrome on these particular Lincoln zephyr rims is exceptionally thick and notorious for chipping so a tire shop sanded off the rim edge where the chrome was overlapping it into the bead area and it helped 3 out of 4 rims however the one last tire leaks to much and the tire shop said there isn’t any chrome in the bead area any more . . so I thought maybe it could be sealed the shop will spray it on if I purchase the paint however no guarantees of coarse…


#11

Tester


#12

wow, I learned something today. And it’s fitting, as I have an aluminum wheel leaking.

Good stuff, Tester


#13

Well that finally settles it! Nice.