Originally Posted by bigworm000
One more question: after replacing these, is an alignment necessary?
If you replace it with the same spec rod (i.e. a 335i rod for a 335i rod) I'd say generally no; but if you replace it with an M3 rod, yes.
That said, it can't hurt. You don't know how jacked up your alignment was to begin with and anytime you remove suspension parts and reinstall them, even if you don't touch the tie rods, you could affect it. If you haven't had one in a while, call it cheap insurance.