Here are the wheels, turned to make 'em empty to be inserted on the suspension arms: I'd say well done!
The inner part will be used to fix the brake discs and the wheel itself.
I've produced the right brake discs thikness through a plasticard
Then I've drill'em out (OK) and tried to drill them in their thickness to simulate cooling holes (no OK). The drill it's too quick and it melts the plasticard: I'll try with another technic.
Finally I made the brake cooling holes with an electric wire, wrapped with a very small diameter copper wire and then covered with Teflon.