Ches!    I don't want to burst your bubble but!    I am almost 100% positive the M1 road wheels are Cast Aluminum!    The lug nuts and bolts are most likely Steel!   But the road wheels should not be all rusted!

I hope others will support my claim on this?   I made a quick search and I came up with cast Alu.  And other composites.....  

Like I said!   Not meant to burst your bubble !

Later Tank buddy!