I did get your post VIN.....Bigger wheels are legal, without an engineering signing off, or approval to be obtained, providing they are the same rolling radius (or within a certain tolerance) and the load and speed ratings are the same or greater than what the car left the factory with....You must also ensure the track isn't increased by more than 26MM from the largest factory fitament availablle for that car...
Club rego....Clubs did have the obligation to report to the department, wheel/tyre combos being larger than what the car came with, if a club inspector spotted it and photographed the car with the combo, or saw photographic evidence of it...If they didn't, the club would be fined and depending on the circumstances, loose their right to issue club rego...
Clubs handle the paper work, to be lodged with the transport department, for a car to be eligible for club rego, as well as the issuing of log books and the yearly or 2 yearly inspections of the cars ... What happens is a club inspector comes out, looks over the car to see it is fitted with parts that it would have been when it left the factory and marks it off on an inspection sheet....Once the inspection sheet is finished, you the owner is given a copy, which you then lodge with the transport department when you pay your club rego...The other copies are kept with the club, so if a car is photographed with illegal parts, or a police officer picks up those parts, it can then be traced back to the club and appropriate action taken.
I say did, because I believe rules have changed since I obtained club rego, allowing a bit more freedom with "modifications" away from factory specs and I'm not upto date with those...