Once again...very interesting. However, as I said my son was pulled over by the Transport cops recently for a check over (including going so far as carefully measuring ride height at several points, and wheel diameters), and also once by the police in our Morris Minor which also has a "non-compliant" chrome and wood-rimmed Autotecnica wheel, they never even
looked at the wheel, much less asked if it was "compliant". If indeed they are "illegal", they should be clearly marked with a large sign saying "off road use only", and having just got back from Autobarn this morning, I can assure you they don't.
I also spoke to a friend who works in an insurance company the other day, just to double check legality if we had to make a claim, and she was honestly puzzled and said the only thing they
might look at in a wrecked car being assessed is the wheel
diameter, as there is a limit on how small they can be (30-something centimeters? 35cm?). She had never even heard of them checking if the wheel met Australian standards. She also mentioned that more importantly (but probably something that doesn't concern most of us here) if you have one of those fuzzy sheepskin steering wheel covers, they can knock you back for a claim..."lack of adequate control", apparently...
I would imagine it is one of those grey areas in the law which it isn't worth the time and bother to pull over and fine everyone who has one fitted...they sell piles of them at the local Autobarn.