Vulnerability: The horizontal pipe

I mounted the bicycle last week. The first cautious insertion of a new 12.5 kg mountain the holder was overtaxed. Vulnerability is the horizontal hollow pipe under the weight of a bicycle on the (wall) bending the end, so not not the tube remains in the horizontal position. I was not at all dare to let go of the bike.
The fact that static does not match the material thickness used, the manufacturer must actually be already realized the first prototype. I doubt that anyone has ever successfully suspended from an adult bike.

Short: Stay away!