unfortunately, we in NA didn't get the GT3 until 2004, so we missed out on gen1. Our GT3 had wheels that are similar to yours/mine but were 1 piece and I'm sure, a lot lighter! I'm refinishing mine as we speak and it's a lot of work. The clearcoat over bare aluminum lip, is the problem area as paint doesn't adhere to metal well without a primer coat. That thread you posted showed one solution- painting it. The other would be to leave the lips bare (!) and polish them as required(!!!!). I believe salt is the worst enemy here.
