Not all cast wheels are made the same way. You have low pressure cast which is stronger than gravity cast wheels. Even then wheel strengths varies from company to company. OEM cast wheels tend to be much stronger than aftermarket cast wheels from my experience. This is a reason why they also weigh a ton.
When it comes to wheels you really do get what you pay for up to a certain point.
2014 LCI 550i M Sport | 3D Design Front Spoiler | BMW Performance Black Grills | BMW Performance Trunk Lip | BMW Performance Diffuser | Painted Reflectors | Wincos 30% Tint | Supersprint Exhaust | ACSSprings | MORR VS8.2 Rims 20x10R and 20x9F | Michelin PSS Tires |||More Photos of my car here|||