hello from Missouri

I have 275-60-15 on the back and 225-70-15 on the front of my 73 340 Duster on 15x7 with 4 1/4 Backspace with 1/4 spacer in the rear to clear the spring pack clamp

It had 245-60-14 on the rear and 215-60-14 on the front on its factory 14 inch rallyes when I brought it home

Is your car supposed to have a black top? and be a triple black car?