BMW 530 / 730 - Defect / cracked / damaged disc ?!?

Are these discs dangerous? Or is it a manufacturing defect? I do not know!

[@aw8147]

It's not defect, any wheel larger than 19" on f01/02 with those damn run flats will do this when you drive through potholes. Solution is to get your wheels welded and change to normal tyres.

[@fct-ferocartech2097]

Hi Albert Wong, Thank you for your opinion. Yes, you are right. But in my case, I had classic tires and not a run flat. Even after welding, this problem appeared elsewhere. Probably bad production. Yes, I know there are these problems with disks larger than 19 inches.