With such low stance, I had to use the two floor jack approach.
1. 2 ton jack lift at front driver side lifting point
2. with BMW in the air about 6 or 8 inches, then used 3 ton jack at front center lifting point
3. Jack BMW up enough to place ramps under each front tire
4. Lowered BMW onto ramps and removed 3 ton jack
Performed oil change, per normal process. Then reverse the lifting procedure above.
NOT terribly difficult, but more of a process than other vehicles I've owned...and performed oil changes on.
Definitely will be purchasing a high quality low profile Alum floor jack!! 
biz
