Maybe there are more technical aspects I dont know about, but salt can eat up alloy rims pretty badly as well, and they seem to develop slow leaks that get worse, quicker than steel rims do...
I guess I just never got using salt as a reason to go with alloys over steel. Wash them regularly, (which a lot of people DONT seem to do in the winter), and one shouldnt really be any worse than the other.
Intersting. I have not experienced bad corrosion on an aluminum alloy wheel. I have experienced signicant rust on steel powder coated wheels. Both on the same roads, differen vehilces.
Just saying, but if you live in a climate where they actually salt the roads, chances are you are not washing your vehicle regularly in the winter, unless you frequent the pay-for-service car wash????
Keep in mind the wheels the OP offered up as alternatives were:
1)Factory steel powder coated wheels; or
2) Aluminum teflon coated American Racing Mojave wheels (
http://www.americanracingwheelsinfo.com/American_Racing_Teflon_Mojave.htm)
Now, having these exact wheels myself, I can attest that:
1) They do not rust and are resistant to corrosion; and
2) I have a 16" steel wheel from Wheelers (
http://www.wheelersoffroad.com/tacomawheels.htm ) used as a spare hung off the back of my swing gate bumper. This wheel is steel and is powder coated.
Both wheels have been subject to the same environment, and same frequency of washing (not much during winter).
The AR aluminum wheels have held up very well, the steel wheel is developing small areas of rust where there have been chips in the paint and at the weld seams. This is the same experience I have had with stock poweder coated steel wheels on our Camry.
Also, what are you talking about the alloy wheels have developed leaks? What exactly do you mean? Did your wheel crack? Or was this due to poor mounting, a bad valve stem, or an old tire with a bad bead? I have never seen a wheel be the cause for a leak unless the wheel was damaged. Please explain?????