Any of the mopar guru's out there know how wide of a wheel tire combo will fit under a 65' 300 with skirts,, thanks

 

I had a set of 14" x 7" with a 4 1/2" back space Magnum 500s on a '68 Fury w/skirts and am sure that 15" x 7" will work.... with P225/75 whitewall tires.
I had just enough room to get my fingers in to release the lever on the skirt.

I believe that an 8" wheel will fit but, needs to have a 5" or 5 1/2" back spacing...