As most of y'all know, I have a 78 El Camino. I've been looking at rims. I've decided on 16's because 17's are too damn expencive for both rims and tires. I just need too know, with a 16x8 rim, what back spacing too run, and what size tire. I want the widest tire that will fit the 16x8 rim and will fit the 78 El Camino without any rubbing.