[Efthreeoh]

Speaking only from exeperience with RWD versions of at least 4 different 3-series chassis going all the way back to the E30, every BMW 3-series I've worked on has dedicated locations for use as central jacking points. The pics I showed you in your other post of the E90 RWD chassis is the front central jacking point. Not shown in the pic is the plastic engine cover (under belly), which has a approximately 6" round dimpled section around the black metal rectangle. The pics you linked to for the AWD chassis has a very similar set up (i.e. dimpled area around a metal retangle) on the under bely pan for the AWD chasis, which is the front center jacking point for the AWD chassis. The jack point is moved forward a few inches from the location of the RWD chassis to make room for the front differential.