66 tire and wheels
 

I am looking for some help on my 66.I want to get bigger wheels and the widest tires so I was going to go w/BF radials. What I am really looking for is the widest tire I can fit in the back. It’s a stock 12 reared from a SS 67 all trailing arms are new (Edobrock) .I check and I have 12 ¼ pocket .
The 4” sidewalls are growing on me aim thinking 18x 9.5 in the back and 16x 8 in front with Bf g-force. Any help would be rely appreciated CC

I had 15x10 w/ 5" bs with 295-50s on the back of my 66