Hey Brandon, how's it going man? Haven't heard from you in some time now. Well to answer your question, go with the Toyo T1R tires, they run the narrowest and shortest side walls, it is the preffered tire of stretched japanese tuners.
Trust me, E92phreak just put 19x9.5 ET25 BBS LM-R's on his E92 and guess what tire he went with? Also he is on coil overs. Just PM him for more info.