tire size
 

I have a 1967 Pontiac LeMans convertible lowered about 2 inches on QA1 suspension. It has cragar rims with a 3.25 backspace and 215 70R14 tires which fit well. I am restoring factory rally 2 rims 15 x 7 with 4.5 in backspace. What size tires do you recommend? I would like as wide as possible without interference from chassis or body. I am not opposed to a staggered setup. Please advise.

Ive used 235 60 15 with 7 inch
May need to go to 225 60 15 on front,depending on your offset.
With 8 inch you can go up to 275 on rear