Michelins are one of the good choices but do yourself a favor and find a good local tire shop.
You will save a lot, get much better selection, and should get road hazard at a modest cost.
Buying tires from the dealer will assure the highest cost and probably less expertise.
2014 328i Mojave Metallic
2009 328i Black Sapphire Metallic
2007 328i Black Sapphire Metallic
2007 Honda S2000 Berlina Black
(Hey Jim... am I diversified?)