this happend to all four off my alloys at wonce, I used to have to carry a
foot pump about with me all the time. I took the car to a local tyre place
(not kwick fit or the like) he took off all the tyres and put them bakc on
the rims with a LOT of that "white stuff" and hey it fixed the prob on three
of the four. I put i tube in number four and never had a mins prob with it
agian. Hope this helps

And Elvis was sitting next to Mark Steward in the spaceship, which I
thought was kinda weird, but then they turned to me and said:

Usually not considered good practice to put tubes in tubeless tyres.

Tyres designed for tubes have a smooth liner inside the carcass to
protect the tube. The insides of tubeless tyres can sometimes be left
quite rough.

hiya
the problem is corrosion, on the inside of the rim where the tyre seals.
The best way to fix this is to take the tyre off and clean up the corrosion
and re-paint to stop it coming back then re fit the tyre.

fragged

I'm sure you have checked, but is it actually the rim leaking? Some alloys
(usually sand cast ones) can suffer from porosity.

Your local tyre fitters should be able to put some sealer
onto the rims before they put the tyres on. I had the same
problem with the alloys on my Golf and this sorted it...

Only problem is, they don't seem to do it as a matter of course,
I had to ask for it....didn't cost any extra.

HTH, HNY.

Gordon