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      05-02-2009, 08:30 AM   #27
2006 330i, TSM, Black, manual, sport
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Drives: E90 330i, E86 Z4 3.0si
Join Date: Nov 2005
Location: Chester Springs, PA

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Originally Posted by drwnwong View Post
just a little bit confuse with this. how come the advan RS can be lighter than the others forged wheels? is it advan RS are cast wheels? which should be heavier compare to forged wheels.
Cast wheels aren't always heavier. It all depends on the manufacturing process, like spun cast. Forged wheels have a denser metal and is heavier per square inch, but then you can make the material thinner to lighten the wheel without sacrificing strength.
There's even a difference in forged wheels. Look at the difference in weights of the HRE P43 and the Volk TE37.
2006 330i, TSM, Black, Sport, JIC Cross Coil-Overs, UUC Sways, 18" Advan RS, Mich PSS 255/265, BMW Electric Steering Wheel, Rogue shifter, M-Tech front, CF emblems, Dinan TB, Intake, exhaust, strut bar, Stoptech BBK, LSD, M3 susp., LUX 5, CF Hood and CSL, Sparco Seats, AA tune, CF Roof