Join Date: Nov 2003
Location: Home of the Homeless
Bikes: Rustbuckets, the lot of them.
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It works. But I wouldn't bother getting too fancy. Rim brakes will wear off the paint no matter what.
My son's bike has some rusty old chrome 16" rims. When we put the bike together, we sprayed them flat black. It took a couple months for the front caliper to wear through the paint. The areas that don't contact brake shoe are fine. Brakes also wore through the rust, so at least the side is shiny again. He seems to use the front caliper brake almost exclusively.
In the case of rusty painted steel rims, there seemed to be no detrimental effect on braking, even with 200+ lbs of me testing the brakes. May have even helped.
Come to think of it, my daughter's bike has 20" steel rims that came painted when we found them. And they brake remarkably well with my weight. Her bike was assembled about a year ago, and the factory paint is much more durable, still not worn through to metal. She seems to use the front caliper and the coaster about equally.