Rim edges are chipping?!

[marin8703]

At first i thought the edges of the rim things had dirt or something, but when i tried to wash it off it wouldnt come off.
It looks like the edges have chipped off but when i run my finger over the spots it feels smooth.
Is it possible that the edges can be corroding "underneath the surface" or something?! cauze they feel smooth. I have no idea what is going on.
Is this happening to someone else? If yea, has anyone had dealer replace? I dont offroad, just city/highway driving.
Please help, cause this is freaking me out! Thanks!

heres some pics:




i have more pics, if you want ill post the rest.