I found first leak on my 2010 550i 35k miles today
its ATF i think from steering ( i found ATF level is also a bit low )
its not under engine basically , its the right passenger side between engine , front passenger wheel and the jack pad
Anyone know this place ? what the heck can leak there

 

I'd look at the rear of the transmission on the right hand side. There is a plastic screw-in with a tube coming out there that sometimes leaks due to the o-ring failing (I had this replaced on mine) and sometimes is just the pan gasket going. Those have been my two experiences with the transmission leaking...lucky for me both were warranty fixes.

 

it's not far away from transmission ? Also as far as i can see the whole transmission is dry
" its the right passenger side exact between engine , front passenger wheel and the jack pad"
Engine oil level is MAX already 5k miles but the ATF steering level was 0.5" low so i added some CHF 11 and
this why i think its the power steering related ...
Anywhere will give it to dealer to fix just want to gather some more info