In Reply to: How heavy are M double spoke II ? posted by gazoline on October 04, 2000 at 15:33:22:
BMW (23M) M contour, 7.5x17, 23.00# cast
BMW (23M) M contour, 8.5x17, 24.50# cast
BMW (39M) M double spoke II, 7.5x17, 22.25# cast
BMW (39M) M double spoke II, 8.5x17, 23.50# cast
BMW (24M) M double-spoke, 7.5x17, 20.00# forged
BMW (24M) M double-spoke, 8.5x17, 21.50# forged
* Above are all 41mm off-set.
Most "knock-off" wheel copies are cast alum.
All forged wheels are more expensive, stronger and lighter than cast wheels.