I've done my research/searching on this and decided I need advice from my most trusted source concerning G35s....
Yeah I'm talkin about u guys

I might be buying a used set of rims that are:
19x9 +25
19x10 +25
But I would like to stick with a similar wheel diameter that I have now with my OEM 19 rims/tires.
I can't go much lower right now because of my underground prk garage.
So I want to try and keep my oem tires.
All the wheel calculations I've checked show that rear oem tire size can only go on an 8"-9.5" wheel.

Can I put a 245 40 19 tire onto a 10" rim safely?
And if so how much stretch will there be?

I just want the front and rear to look some what similar (stretched wise).
I wasn't sure if there is some play there with the #s.
I would usually go with the trad 245/275 setup but funds are too tight right now.

If it makes it any easier I'm on 350Z Htechs with a rear spring mount mod.
I'm looking to go lower, but no time in the immediate future.

Visual reference

 

morning bump

 

I've fit a 235/30 on a 10.5 so I'd say it can be done.

 

They will easily fit~ no prob. Post some pictures after you get it installed.

 

Okay cool, thanks guys.
Do ya think the tire stretch in the back will be noticeable more than the front.
Just want to make sure there is some continuity there.