Not sure about the alloys, at least I've not changed them. They do have Lexus logo, so I've been assuming that they are original ones. I of course have second set of allows for winter tires, and they are not original.
Just wanted to say "hi" to you all!
I recently bought a 2008 GS 450h and I've to say it is an amazing car!
Luckily I also found this forum: it has already provided lots of useful information for me...
BR. Sami