I'm running NT-555 265/35/18s up front and NT-555R 305/40/18s on the rear on 9" and 11" wheels respectively. DSE subframe and minitubbed.
Actually, we're pushing the car around the shop on 'em at this point.
Not much running yet.
I believe on one of the 275/305 combos the sidewall on the fronts protrudes more from the wheels than does the sidewall on the rears.