Re: 15"X8" wheel w/5" backspacing
After putting them on, IMHO, 5" backspace will NOT fit. Too close to the tie rod end, it would look like it'll ride/rub on it and the tires will likely rub pretty hard at full lock turning wise. Maybe if they're big diameter rims, like 18" plus, but the tires still rub at full lock/turn, --the flange for the rim will be past the tie rod ends, but on a 15", no. I wouldn't do it.
Misfit tortured soul. Lone wolf. Unicorn.
'67 V8 Camaro - 12637, 797-Z (Parchment), M-M (Royal Plum), 2M, 3K, 5Y