newbie here, 1st post/thread.
want to upgrade wheels!

I have an 04 g35 with sport suspension and OEM 18's

I am settled on some chrome 19's (Foose Lusso) but they only come in 7.5 and 8.5 width(P.S. they are lipless rims). I want to keep the stagger for the VDC but want a low-profile, non-bulging look of the tire, and also keep a minimum gap (I'm basing everything off factory gap as it is which i am totally fine with). I also want to stay in the 3% rules so i don't throw off the speedometer too much. From what i can see, the factory stagger is 0.7". Please give me some advice on the combo front/back that would be best for me.

(P.S. i'm not going to lower seeing that i live in Pittsburgh and don't want to lower it because of all the potholes and hills(my drive way is like 40 degrees)).

i guess lower diamter would have a bigger gap but lower the car just a bit(which is ok i guess), but i don't want too much gap with the factory suspension.

Tell me if i'm thinking wrong and what you would do. It seems like everyone here does 245's with 8.5's.

(From: http://www.miata.net/garage/tirecalc.html )
All within 3% of factory diameter.

Factory8 inch widths i think)

Fronts : 225/45/18
total wheel/tire diameter: 26.0"
Rears: 245/45/18
total wheel/tire diameter: 26.7"

Here are the options:

Fronts: (can do 7.5's or 8.5s)
235/35/19 = 25.5" diameter
245/35/19 = 25.8" diameter
255/35/19 = 26" diameter (same as factory but would look too bulgy with 7.5 or 8.5 width i would think)

Rears: (8.5's)
245/35/19 = 25.8" diameter
255/35/19 = 26" diameter
265/35/19 = 26.3" diameter
275/35/19 = 26.6" diameter
OR 245/40/19 = 26.7" diameter (same as factory but would this have a low enough profile?)

My thoughts were:
fronts 245/35/19 and rears 265/35/19 which would give a .5" stagger. I'm scared that this would give me a "drag racing" type bulge(tire looking like its too wide for rim sticking out more than rim) in the rears seeing i would be matching 265's with 8.5 wide rims.
OR
fronts 245/35/19 and rears 245/40/19 which would give me a .9" stagger (a bit more than factory) but i'm scared of 2 things here. 1. would this give me the look that my car's rear is sitting "*** in the air"-like since i would be lowering the front diamter by .2"(25.8" compared to factory 26") and keeping the factory rear (26.7"). and 2. would this not have a low-profile enough look with 19's from the side on the rears since my profile is 40 instead of 35.
OR
fronts 245/35/19 and rears 255/35/19 which would give only a .2" stagger. my concern are 1. is this enough stagger for the VDC. Also would this have too much rear gap going from 26.7" factory diameter to 26" diameter? (should add an additional 0.35" to the rear gap)
OR
fronts 235/35/19 (7.5's or 8.5's?) and rears 355/35/19 which would give me a .5" stagger. my concern here is that it would have too much of a gap because i would have a diameter of 25.5" up front (from factory 26") and a 26" diameter in rear (from factory 26.7").

Sorry for the long post but am really blowing my head up with this stuff.
Don't know a lot about this subject. Thanks for all answers.

 

With your choice, I would do four 19x8.5" wheels (if the offsets are correct)
and run:

245/35/19 front 255/40/19 rear