666M Wheels Chipped Paint

[bhaas412]

Anyone have issues with chipped paint on their 666M wheels? I realize it's not that noticeable right now (edge of rim at bottom) but this seemed to have happened washing my wheels a couple weeks ago and I saw it get increasingly larger just hitting the area with a garden hose (not even a pressure washer). I'm a little nervous the next time I go to wash them that it'll keep getting bigger and bigger.

Any tips to prevent it from getting any larger? Also wondering what I could do to touch it up and make it a little less noticeable (what sort of paint would work best?). Thanks!