Hey CHris, I have the exact setup you're interested in (6 and 7 x 16 fuchs) on my 75 coupe. As Dave pointed out, my drivers side rear would rub on hard cornering. The fix for this is to simply roll the bottom lip of your rear wheelwell upwards so that the tire clears. It only takes just a little bit to clear. I did it myself, very easily. Car has a far more aggressive zeal now with the new wheels. Responsiveness has also greatly improved.
Matt
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