The 7 series Beema' man
He’s referencing the massive size of this particular class of sedan, as well as its cachet due to its high cost. It’s both a direct and indirect comparison, in that he commands respect, so he is like a car which commands respect as well but is also literally heavy in the streets.
To help improve the meaning of these lyrics, visit "What Happened to That Boy?" by Birdman (Ft. Clipse) Lyrics and leave a comment on the lyrics box