Got this 2008 G35Xs today with 137k miles. Base price was $7480. It had Michelin Pilot Sport tires, which I will not drive in weather under 50 degrees. Had the dealer get Michelin X-ice3s from Tire Rack and include them in the deal, plus I added a 2 year warranty (yeah I was skeptical, as I do most of my own work - but I can't afford a major issue like a trans going out). All told with tax, title, etc. was $10.5k. Already planning on getting used G37 staggered wheels in the spring/summer (19 inch Rays forged) - I think they are 8 in front and 8.5 in rear. If I put 225/45x19 front and 255/40x19 rear they will both be 27" diameter, so no issue with AWD mixed sizes. Already have downloaded all service and owners manuals. Also got Haynes and original manuals ordered from eBay - you've got to be informed. I am very please with the passion about these cars on this forum and also on Facebook as I really liked the same intensity about my 2001 Audi S4 (0-60 4 secs).

 

Congrats on the new car!

Here's a link to the factory service manual, everything starts at the FWD file.

http://www.nicoclub.com/archives/infiniti-g35-g37-factory-service-manuals.html