Aluminium/magnesium alloy leads to the wheels getting porous after some
years. Also other alloy wheels may devellop this habit. It can be cured
fairly easily. Have the wheels glasbeaded, front, rear and the tire bed
as well, clean and degrease thoroughly, leave to dry for a couple of
days and paint the wheels entirely with a good quality two pack paint
using at least two layers. Have the wheels balanced with stick on
weights to avoid damage to the paint.
Another fault may be corrosion on the tire seating area: clean and polish.
My Jensen Healey and Subaru suffered from it as well.
Simon Lachlan schreef:
> I have a Porsche 944 S2. It's a nice car but no Healey.
> So...despite having 4 new tyres, I continually lose pressure on 3 of the 4
> corners. My guess was that the seal between tyre and wheel was not sound and
> that a good clean up would solve it. My tyre man, who is good, tells me that
> my wheels - the original Porsche ones - are getting porous..that the
> aluminium lets air through.
> Have you heard of such a thing? It sounds possible to me.
> Is there a cure? Some goo that one paints on to the wheel's inner surface
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