Rim backspace and caliper clearence?
 

Looking into a set of 16" pro comp rock crawlers from a guy that has a 06 Tacoma, he says the rims have 4.5" back spacing but rub on his from brake calipers. I have a 93 pickup and looking to get some info on the fit. Did some searches on here and found a thread about if the back spacing is 4.75" or less they will fit. Want to find more info though.