Will 275/40/18's fit an 03GT Conv all the way around?

i ran 275/35/18's for many years....just switched to staggered...255/35/18 front 285/35/18 rear. I just love the look and no rubbing when i turn. And tirerack is very good...i hear p-zero's not so good. I have the goodyear eagle F1's and like them alot...much stickier than the nitto 555's i was running.
 
I have 265/35/18 in the front and 285/35/18 in the rear with a 2inch drop front and rear and the only way it will rub in the rear is if I have people in the back. The front doesnt rub at all