Thanks Guys!
BBS is another option. HK BMW is one of the official dealers and adds 100% tax for new cars within 6 months on road. ($50,000/set with tires + 100% tax= $100,000 HKD= ~$12,800 USD) roughly another new used car of Honda civic...
I can wait 6 months and then put them on(no tax) from BMW HK....options include OEM, BBS, AC Schnitzer from them. (Maybe more)
OZ does not have wheels I like. Another options are the Type V AC Schnitzer in 20's.