BBS CH-RII 21x11.5 5x120 ET36 Satin Black Center Platinum Lip SS Rim Prot Wheel PFS Req w/MS Etching
BBS has been flow-forming wheels since 1996. Flow forming is a procedure that uses a continuous rotational motion with 3 hydraulic rollers and tremendous pressure at high temperatures to "Form" the inner rim area of the wheel. This process changes the mechanical properties of the cast rim area to increase strength, stiffness and impact over "stiffness to weight ratio" which can deliver very high level of performance at a cost that is much lower than a forged wheel. Each Performance Line wheel is one piece counter pressure cast, with a flow-formed rim area, and of course weight optimized by FEM analysis.
Bolt Pattern: 5x120