Ok.....that should have been your thread topic...lol..........
The process of powdercoating with the electric charge / coating application / bake for cure doesnt show a cause for weakening of the wheel. If anything it reinforces it. The casting of the actual wheel is where the strength is located. The material composition and wheel structure are the two factors where the off-brands/bootleg/rotas/sportmaxs/pepboy brands suffer from. Not that in a bad accident a BBS wheel wont suffer a catastrophic faliure but Pot-holes, uneven pavement shouldnt be a reason for a wheel to crack/fracture/break.