Dangit. Got a little setback on my hands. I took one of the tires (205/75/15) and had it mounted on my 15x7 wheel today and it looked aweful as I suspected it would. So I've got to return my tires to Diamondback and get another set.
I was hoping to have a roller this weekend but this is going to take another few weeks and cost me about $160 in shipping
Oh well, guess you gotta pay to play.