Originally Posted by Hyper psi-atic
The weight difference in Advan flow-formed cast wheels and their forged wheels are very minimal. The strength is similar, however I believe the manufacturing process is much cheaper in flow-forming due to the added cost of the high-pressure forging machines.
Forged wheels should have added strength characterists, but not sure the level of difference.
F1 and Indy cars use Flow-Form Cast BBS wheels.
Here is a 19x10 et20 RS-D
Here is a 19x10 et22 RZ-DF
There is almost a 3 lbs weight difference which is actually pretty considerable.
Indy and F1 cars use forged Magnesium wheels...flow formed cast wheels are just not light/strong enough for the crazy lateral loads that F1 cars see.