Thanks, I finally found that info and was able to verify it on a wheel.
https://www.wheel-size.com/size/chev...suburban/1993/
Pretty useful site for wheel and tire sizing. Only they listed the backspacing as 0 and -13 which lead to the confusion.
Speaking of which, this is part of the same website, great tool for checking out wheels and tires.
https://www.wheel-size.com/calc/