I put a deposit on a car this evening, and need to determine whether to use the stock wheels for winter tires or the wheels I have on my Accord for winter tires. I'm trading the Accord in with the 16" stock wheels I've been using for winter driving.

Are the stock wheels on the G37x Coupe 18x8 or 18x7.5? I've read both dimensions at different places. If the stock wheels are narrower, I'll definitely use them for winter tires. If they're the same, I need to make a decision within the next month or so. The tires on the stock wheels only have 5/32s. Inadequate for snow, so leaving the all seasons on them now for the winter isn't an option...

I've been told that the offset is the same and I just need new center rings for the wheels I have on my Accord now. They are 18x8 Sport Edition KV5s.

Tirerack's mock up of the accord wheels on the car:
2009 Infiniti G37x Coupe Base Model