These are 17" Fuchs modified by Lindsey Racing.
Before. Some prefer the fully polished look:
After refinishing by Al Reed Polishing to RSR-look:
The bead blast pressure will vary the end result. Lower pressure (approx. 30 psi) produces a smoother, lighter tone finish. These were shot at approx. 40-50 psi. Glass bead size/shape unknown.
Their process, at least for these wheels:
1. Polish
2. Anodize the complete wheel
3. Mask selected area, then bead blast. The outer edge remained polished - hard to see in the above photo
4. Mask and Paint background
Notice the sequential steps they employ. They explained that in their experience, anodizing bead-blasted surfaces (reverse steps 2 and 3) can leave a blotchy appearance, probably a greater chance with custom-welded wheels. Not sure if any of the thin anodizing surface remains in these blast-treated areas.
Just to be sure (or anal), I'm now looking at protecting all surfaces with a clear, low-gloss, ceramic coating which is impervious to acids, solvents, brake fluid, etc. (product-dependent).
In the meantime, the wheels receive a thin coat of petroleum jelly (Vaseline). Al Reed also recommends more frequent scheduled maintenance with bead blasted wheels to reduce brake dust from attaching itself to the finish.
Sherwood