Tire size front and back

[Meerology]

Hi guys, Im considering getting the MT 305s or 315s for the back but some say they fit normally and others say I will need to roll the fender and whatever. Question is will these have any problems rubbing? I dont want to change the rims or roll anything. Also what do you recommend for the front? Should I stay on the stock size or go wider?

Theyre for a 2014 GT500

Thanks in advance