http://bugs.winehq.org/show_bug.cgi?id=33342
--- Comment #5 from Felix Hädicke felixhaedicke@web.de 2013-04-07 07:46:26 CDT --- To be sure that there are no custom registry settings I have reinstalled the game from DVD in a clear wineprefix - and the bug was gone.
It is indeed the ORM registry settings which I had set to backbuffer made this bug occur. With winetricks orm=backbuffer the rear view is upside down, without it, everything is ok.