Thought i would give myself peace of mind and order a decent sized wheel/spare tire combo for the 335. I went ahead and followed the advice given in this earlier post. Bought a cheap 17' x 7.5" rim and a 225/45/17 tire at tire rack and the jack kit. Total cost about $350. The spare kit from Tischer is 275+50 shipping or $325 and you get a lousy spare. This way I don't have to worry about getting a flat and can get rid of the sub-par runflats for some normal tires.
http://www.e90post.com/forums/showth...ght=fuzion+hri
I will give you guys feedback on everything when the parts get in.
By the way, I priced out runflats vs non-runflat hankook tires and the savings are about $590 each set!!!! So the spare pays for itself within 1 tire set.