I need more then one opinon on tire size

I just bought a new set of Intro Pentia's.   17x10 rear 4.5 back space        17x8  front 4. back space. I need help on tire size. I need the widest tire that will fit the rear with no rubbing. I also want it to just fill the fender well. I am going to use fender flares. I love the low profile look but it has to fill fender well. I want to drop the profile in the front lower then the back because I want it to have the c6 stance . I was thinking 265-?-17. show me what you know.

Call the tire rack!  They have all this info at their fingers... Great prices too and the info will be correct..

well just found out that the front has a 5. back space on the front. Im going to try the wheel on with out tire to see how it fits. beause I want flares in the rear and I found outt the rear wheels has 5.5 back space, Im going with a half inch spacer and run some 295 45 in rear.  You can only do this with a 17 or 18 inch wheel.