70′ challenger front wheel issue

I'm in the middle of my 4th full restoration of a 70 challenger convertible. I installed a new front disc brake system with standard / factory height spindles and I'm running 245-60's on 15x8 rims with a backspace of 41/2. Pretty much the same as my others, EXCEPT I think I ran 15x7 with 35's on the front on those.
At any rate the clearance between the upper control arm and the rim, WITH, a lead balance bead on the inside of the wheel is less than an eighth of an inch. I'm at a loss as to...

70' challenger front wheel issue
Author: jujuka