Thanks mate. I'm not 100% sure on the wheels too be honest, from what I can gather via the internet, they are just the stock 18's that the 06 sport model came with, but of course, the internet isn't always right, but for a factory rim, I don't think they look too bad, lol.
Regarding a meeting up of Perth members, I currently work away quite a lot, but once my schedule settles down, if it does, then I might look at just posting a time and place on the forum and see who how many local Lexus owners are keen :)