Originally Posted by mkoesel
Make sure you have your towhook in your car at all times, because you will need it in this case (to get the car up on the flatbed).
Not good advice, unless they've strengthened the mount on the E92. I've seen inserts pulled out of the E46 bumper by doing this, as it is not designed for towing up steep inclines. The proper way, on the E46 at least, was to remove the front jack pads and attach a Y-harness to the two points underneath.
A lift bar type tow truck is approved for towing, in addition to the flatbed (owner's manual p. 219).