Noting that I have three Audis....
I've been cleaning *some* wheels between washes, using every method from sorta-conventional washing (being careful not to get water/etc on surrounding areas, what a PIA that is!), to ONR, to various QDs (my fave for this being FK146).
IME anything short of proper, lots-of-water, extreme-care-style washing will cause some degree of marring. Maybe not every time, maybe (mostly) nothing you'll see with the naked eye, but eventually *some* marring nonetheless shows up.
I'm being as careful about these washes as I can imagine anybody being, and I recently had the wheels on the MPV repainted, so I had a good baseline for observation purposes. I've very gradually, very faintly, marred them up over eight months or so of doing this. Compare that to *zero* marring (afer 8 years) on the S8's wheels, which are always washed "properly" and *very* carefully.
I've also caused some light marring on the other wheels I've done this with.
So there's *no* way I'm gonna do this to the S8's wheels. But on the other cars I just accept the risk and I don't sweat the (admittedly minor) marring. Unless you're *really* particular, and doing *very* rigorous inspections, I suppose the marring oughta be so mild as to be no big deal for most people. Heh heh, spent 20 minutes inspecting your wheels lately?