Hello i am new to the community and i have had my 2004 bmw 530i since 2011 and i just hit 140k miles. I was just trying to get a good idea of things to upgrade/maintain to keep my car in great running condition. I would like to get a list so i can take it to my bmw mechanic and have him check specific things. I would aslo like some input on any mods or upgrades anyone has done that they feel is vital and everyone should atleast do. Thanks so much guys