I just bought a set of Cragar Classic SS 14" wheels for my 1966 Fastback. I got 14x7" with a 4-1/8' Rear spacing for the back. I want to put 245x70x14 on the back. Will that tire size allow for enough clearance? I know very little about how tire sizes work but I want a bigger beefier looking tire on the back as opposed to the front, which I think will be 205x70x14. Thanks in advanced.