Bugatti Chiron - loose connection to wheels
I see a gap between the grey part and the black part. They should be flush picture 1. Normally it take some force to assemble these hub parts. 



If you look to the back side of the "back" side you must see the clip of the grey as 
picture 2. 



The grey part must rotate freely so if you apply some force to if and have it slow down if its own it must continue to rotate for some seconds until it stops