BMW Z4 Forumhttp://www.autotropolis.com/cs/forums/61/ShowForum.aspxDiscussions directly related to the BMW Z4—For owners, potential buyers and enthusiasts.enCommunityServer 2.1 (Build: 60809.935)run flat tireshttp://www.autotropolis.com/cs/forums/thread/32555.aspxTue, 25 Mar 2008 22:49:57 GMT47d518e0-6f86-4bcb-9b63-62b215176eac:32555hob1z280http://www.autotropolis.com/cs/forums/thread/32555.aspxhttp://www.autotropolis.com/cs/forums/commentrss.aspx?SectionID=61&PostID=32555i hear a lot of talk about changing the run flat tires on Z4 s  , i have a 2004 z4 3.0 and it drives real rough,anyone know anything about this?