[Richbot]

No, not normal. I'd contact them. At least one of those is more than just a hairline.

FWIW, this is why I don't like black wheels on competition cars, it's a bastard to find anything unless you're doing something like cleaning your wheels. The shiny and silver wheels are easier because brake dust collects in the cracks and shows you some contrast, I've found more than one crack just walking past a car with lighter wheels on it. And of course they never start in the easy-to-find places, they always seem to crop up on the inside of the spokes first like yours so anything you can do to help yourself is a benefit.