Tire clearance

Cuda 1964 said
I have a 64 barrcuda with 8 3/4 rear end, 6 leaf springs 3in lift, stock spring location and stock shackles.
I'm looking to put 255/60/15 tires on 15x8 rims with a 4.50 backspace and 0 offset, do you think they will fit without any modifications?
Right now I have
225/70/14.
Thanks all for your input

I doubt it. I have 245 50 16 on 16x8s with a four inch backspace on my 1965. Clearance is tight on both sides. 205 55 16 on a 16x7 in the front.

Pic from rear pov still has 16x8 up front. The car did not like that size.