Tires Oil changes (oil or filters) Brake pads [b]EDIT[/b] And a K&N or some other brand of cloth air filter. You are only hurting yourself economically and in better performance of your car if you do not install one in place of the paper filters. Other than that, replacing parts like alternators or batteries you can get by with the store brand options, just make sure to get the lifetime warranty. You may be needing to use it more than you think.