1970 Dodge Dart w/(73 dart rotors/5x4.5") Front wheel and tire size combo "?"

I'm running 225/60-15's on the front of my 71 with 15x7 rims with 4.25" of BS and the fit is great- no rubbing. My car is lowered a bit too. I want to say that my tires are 26.6 inches in diameter.