Im on bc coilovers and stock base wheels, here are some pics for better look

https://preview.ibb.co/nAp1KQ/20170916_184412.jpg

https://preview.ibb.co/m4cJYk/20170916_184428.jpg

https://preview.ibb.co/bsubKQ/20170916_184444.jpg

https://preview.ibb.co/iyunR5/20170916_184456.jpg

You got 20/25mm F/R spacer's on the 18" base wheels in those pic's?

Yessir

You got room to play with on front for sure,,,being lowered; chances are your camber is a tad more negative in front than what comes from factory-so you can get away with a more aggressive wheel.
Those factory wheel's are 18x8+43/18x9+15
Your spacer's made them 18x8+23/18x9-10
Your front wheel lip's will sit right at 1/2" further out than pictures w/20mm spacers.
Rear's will virtually sit in the same place as pic's w/25mm spacer's.
Depending on your taste-you should have room to swap spacer's around & see what look's best to you.

I'm stock ride height & right at -1.0 camber all around,,,from a front view; the wheels will appear to stick out more than from rear view; fenders curve inward on front....unsure if it's as much on newer body's.https://uploads.tapatalk-cdn.com/201...357f5b39d1.jpghttps://uploads.tapatalk-cdn.com/201...57497ddee4.jpghttps://uploads.tapatalk-cdn.com/201...fd0c421f12.jpg


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Your wheels are the f14's forgestar? So you have 19x9.5 +20 front
19x11 +15 rear correct? That's why you don't need spacers. I think yours stick out more than mines. What size of tires do I need for aggressive? I don't think I will need those apr extended studs with the spacers right? I just don't want the tires to be sticking out like a riced out civic

No, Mine are 19x10F & 10x12R +38 offset on both,,,should be in my signature.

usually the 20,25mm spacers come w/studs & they just bolt up to the hub's & your wheels bolt to them....Z1 has many options...& for tweaking..they offer 5mm,3mm,2mm i think...they get pretty thin w/them.

your rear tires look wide as hell. do you think I can use a wider tire like yours with my new wheels?

A wider tire will go on a 9.5" wheel; though the 9.5 is optimum for the 275 width tire.
Best way to spec wheels, is to tune suspension first & then measure your inner clearance to most likely contact point.
You can then determine about how much wheel will fit (as you have coilovers) and then pick from various sized tire's to work for you. (Height/Diameter/etc.)
Best to keep the diameter close; as if you're too tall F/R, you will have multiple warning lights illuminated on dash & reduced power...I'd recommend 2% max differential & I prefer a slight rake (rear tire's a bit taller than front), though some people have pushed out closer to 3% & some choose a negative rake (front's taller than rear)...as our base Z's came with 26.7"R,26,9"F.
Have in mind what brand & performance catagory tire you're looking at; cause they will differ by mfg.
This is how custom offset wheels are determined.
Also never hurts to scroll back a few post & look up the [official 370z] fitment guide...tons of pics/specs/setups that others are running & alignment specs and any issues you've having.
Endless setup designs for these cars w/massive wheel wells.

245/40 & 275 or 285/35 are your best choices & closet to oem diameter.
You initially listed 245/35,275/35...may cause multiple warning lights (Christmas Tree effect) with this much difference in diameter.
You can go shorter if you desire; a 35 series up front & 30 out back.

Anyone know if the Rays Gramlights 57transcend will clear akebono brakes with no spacers?

19x9.5 +25 / 19x10.5 +20

Yes, these clear the Akebono Brakes without spacers. These are also an easy fit. You can run nice size tires without having to roll fenders either. :driving:

Hi Everyone, I picked up a set of f14 wheels for cheap locally, but theyre rubbing pretty bad, just wondering what people here may have done to get it to be fine. Front specs are as follows:
19x9 +12 sitting on 275/35/19 Rs3. Rubs on bumps. I've installed FUCA, but haven't gone for an alignment. Will I need to roll fenders?

I'm lowered on Swift springs.

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Roll the fenders to be safe

An alignment will cure most of it, tech should be able to increase negative camber