Thanks for your replies. This does appear to be the exact same design wheel, only cast instead of forged. So will they weigh the same? (unsprung weight is important) Replicas are only avalable in 18"x8", where as the the BMW wheel is available in 18"x8" front and 18"x9.5" rear. Replicas are $250 each and BMW wheels from a discount dealer are about $500 each, so there is significant savings with the replicas. Comments welcome. James