These are the specs I found (embarassingly, this was AFTER I had alsoready posted a thread on myG37 looking for a trade -- D'OH!!!)
G37 OEM Wheels Specs
Sport
Front: 19"x8.5". Cast aluminum. Made for Nissan/Infiniti by Enkei. Weight: 26.5 lbs. Bolt pattern 114.3 x 5 Offset +43
Tires: Bridgestone Potenza RE050A 225/45/19 92W. UTQG 140AA, weight 27 lbs., tread depth 10/32"
Rear: 19"x9". Cast aluminum. Made for Nissan/Infiniti byEnkei. Weight: 27.5 lbs. Bolt pattern 114.3 x 5. Offset +45
Tires: Bridgestone Potenza RE050A 245/40/19 94W. UTQG 140AA, weight 30 lbs., tread depth 10/32"
G35Driver - View Single Post - How much does the OEM rims weight?
If there's a set floating around that weighs less and can have wider tires mounted to them, I'd still be interested -- I really like the look of them.