Originally Posted by stressdoc
There is more to wheels than just weight. BBS and Rays/Volk have well-deserved reputations for quality products. Perfect symmetry, no inclusions, latest high tech manufacturing processes result in strong, durable, balanced wheels. BBS and Volk forged wheels have exceptional strength/weight ratios. Flow form casting can produce a fine lightweight street wheel though.
Both Advan and BBS supply flow-formed cast to the WTCC.