Yes Snapon, this storage method may be the case there at the manufacturers, but Spanners original post was asking the situation from other locales, and I can assure you that company policy may have the storage done differently elsewhere.
I am not defending either method, as I comply with the rules promulgated at the time whatever they may be, provided I consider they are not going to be harmful.
I just took offence that lame decided he knew the situation, when this was not the case in the companies I had dealings with. The airline he last worked for may have stored wheels that way, but not all here do.