Wheel size and back spacing

I’m looking at some wheels for the Duster build. I’m looking at are 15x8 with a 4.5” backspacing for the street. The other wheels I’m looking at for slicks are 15x10 with a 5.5” backspacing.

My question is can someone tell me if I’m correct that the wheel would be at least an inch closer to the quarter panel. With the 15x10’s