Before I mini-tubbed mine I ran 275/60 drag radials on a 15 x 8 street lite with 4.5 backspacing and the outer lip trimmed.I mini-tubbed it to the stock frame rails,moved the springs into the frame and have a 315/60 drag radial with 12 inch street lites.
'33 Plymouth 5 Window Coupe Blown Aluminum HEMI w/bolt ons (under construction)
'69 Chrysler 300 Convertible 375 HP 440
'71 Plymouth Duster 360 W/EFI (Wife's Ride)
'12 Ram MegaCab Dually 6.7 Cummins