The TRMotorsport wheels are only at TireRack. They've been known to be a little soft and easy to bend if you go off.
These D-Force are another option and are suppose to be pretty strong and are very light. http://store.bimmerworld.com/d-force...4690-p894.aspx
A jack pad is another thing to consider since you're getting a floor jack to fit into the jack pads under the car.