Just for your reference I have 17x10.5" bullitts with 315/35 Sumitomo HTR's on my 03 v6 car and they are almost flush. The Sumi's are notorious for running narrow.
My Mach 1 is running 18x10.5" Rovos Durbans with 295/35 Nitto NT05's and they tuck about 5/16" of an inch. Perfect imo. Typically Nittos run narrow but I think the NT05's are about average. Definitely not BFG or Goodyear wide.
Neither have or need spacers.
12 Black GT500 SVT PP l 2.6 Pulley/Idler l Airaid l o/r X l 305 NT555R's l Recaros l
04 Azure Blue Mach 1 / 03 Sonic Blue 3.8 / 14 Sterling Grey F150 FX4 402A 5.0 / 11 GT500 R.I.P.