Those will take a 275/60/15, but they won't fit. Not enough backspacing for a 15x8.5". You'd need at least 4.75" backspace on an 8.5" rim.
275/60/15's will work on an 15x8, and on a SBP 8 3/4 you could get away with about 4.5" of backspace. 275's are about as big as you can go though with the stock spring locations and unaltered quarter lips.
Thanks, good info. Too many decisions. I'd be happy w the slots but the rears just are wide enough for me. if i g ow 15s i have to decide Cragar, Centerlines, etc. I have a great set of Rallys but im trying to preserve those.
