What do I need for 19" wheels
 

I have a 2009 c350. I am looking at getting 275/35/R19 Nexen Tires at 50% on rears and, 245/40/R19 at 25% on front. I am wondering what I need to do to make them look best. The guy I am getting them from said I may need spacers. I was also wondering if I do not lower it will it look weird. I have included a picture of the e55 they came off of.