I just acquired an '81 El Camino
It had some aftermarket IROC style rims on it which the previous owner removed and put on what appeared to be the factory rally wheels (14 x 6, 5 x 4.75 w/ 5" backspacing). the problem is that on the passenger side ONLY, the wheel is rubbing the steering components. this isn't happening on the driver side. I think that these wheels are likely off of a Camaro rather than an El Camino or Monte Carlo and therefore would have the wrong backspacing, however I can't figure out why they only rub on the passenger side. I compared the driver and passenger wheels, and they have the identical backspacing. I'm stumped.