Depending on your budget, the RAC might be the best forged wheel you could buy at the moment. If not, the Alufelgen
SF-71 might be exactly what you are looking for. The quality, engineering and design cannot be beat for the money. The wheels are
low-pressure cast which makes them lighter and significantly stronger than gravity cast. The front weights only
23.8lbs 
which is nearly forged/flow-formed territory and the quality of the finish is second to none. We have gotten nothing but excellent reviews from every single one of our customers.
-The front SF-71 in 19x8.5 mounted on 245/35/19 Tires weight 45.2lbs vs the 19" OEM front wheels on 245/35/19 tires that weighted 51lbs. A savings of nearly
6lbs per corner.
-The rear SF-71 in 19x9.5 mounted on 265/30/19 Tires weight 51.5lbs vs the 19" OEM rear wheels on 265/35/19 tires that weighted 54.5lbs. A savings of
3lbs per corner.
Please feel free to contact
Julius@WheelSTO for a quote and the best customer service on M3post.
Here is a few pictures: