F30 is already a year ahead of E90. I test drove a 335i and it is no M3.
When will the coupe hit the market? How about the new M3/M4? A year and a half wait? If that is the case, I am thinking to pick up a set of good coil overs as I find my E90 dated and not very good looking. I know lowering it would help a bit.
I am thinking to get KW V3. I have stock 19" with PSS. If I just lower the car I probably needs to have spacers to make it look beefy. I also have a set of 18" Rays TE37 SL 18x9.5 18x10.5. I don't think I can find tires that would fit perfect and be as quiet as PSS.