67 barracuda 275 60 15

Just for possible comparison, my 67 coupe has SBP Cragars, 225/60/15 Falkens on 15x7 wheels up front, 235/60/15 BF Goodrich drag radials on 15x8 rears. The drag radials are about worn out. I plan to go bigger on the rear tires, haven't decided yet whether 255/60/15s, or 275/60/15s or 275/50/15s. Right now kinda leaning I think towards 275/60 Nittos. I need to check the rear wheel backspacing, as I don't remember what it is.

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