Caster is the same for both front and rear
Toe is the same for both front and rear

I knew someone would reply and say caster is adjustable. Wasn't clear that anyone has FRONT SPC arms, and since caster is the same for both cars, you will have to max out the adjustment nut to get the caster as close to stock numbers as possible.

The only difference, based on the charts between the two cars, would be camber. Like I said you can put this wherever you want.

G35: -.83 - +.67 front
350Z: -1.33 - +.17 front
No difference, it should be around -.75 anyway.

G35: -.17 - -1.17 rear
350Z: -1.08 - -2.08 rear
I've always put my sedan rear at -1.5 and do not have any more tire wear than normal.
And if your interested in adjusting to nominal numbers, your car might handle a little better with the 350Z numbers. Not a terrible idea to choose either car for your alignment.

Would you say all 350Zs with proper alignment numbers wear their tires faster than all G35? Nobody will notice a difference between .75 degree of negative camber.

 

The 350Z has slightly more camber for a reason: To improve handling during cornering. Technically, this should also result in slightly more tire wear as well. I don't think the difference between the two alignments is that great either way. I've ran 350Z alignment for a year now because I wanted better handling. My tires have held up fine.

 

Nicely put together!
The OP clearly says that he has SPC Camber arms. But in general/stock, no it's not adjustable, neither is camber in the front.

And yeah only real difference worth talking about is camber.
The front should be at ~0~ Camber ideally, or just a slight bit of negative.
More than -0.50 camber in the front is excessive.

IMO 1* of camber difference is a signifigant difference when alligning.
But running -1.5* in the REAR on a G35 isn't going to roast tires off, they just won't wear AS evenly as they WOULD with, say, -0.50* in the rear.

I would allign ~0~ front and -1.0 rear as a goal for camber.

If he doesn't have toe bolts and/or camber arms setup in the rear though it's pointless to talk about because he'll be stuck running 350Z specs in the rear anyways (more negative camber). The front just set up for 0* camber and a .01 toe in.

And yes 350Z's are known for camber wear on the rear tires especially.

 

I think the weak toe bolts cause more tire wear problems than having a little more negative camber.

Lets just hope the OP's alingment shop knows how to adjust his front and/or rear arms.

 

Most places won't adjust the front arms without charging more. And you really need to explain it to them.

I did mine by eye then took it in for the toe adjustment. They didn't even touch the camber, it was almost bang on 0.02//-0.02 left//right.

I was shocked at how close it was, probably sheer luck lol. They did adjust the rear but they needed more toe adjustment to get camber in spec. Unfortunately I forgot to notch out the slot for the new toe bolts!!! DO'H!!!

So I'm running -2.0//-2.5 camber in the rear until I can get the toe bolt slots done.

 

The shop did all the adj for me. They had done the arms before. Do I need something for the rear or is there some adj back there stock?

 

If you want good g35 allignment numbers you will need either 4 toe bolts or 2 toe bolts and 2 camber arms.

if you're ok with using 350Z specs you can use the stock cammed bolts for camber/toe adjustment. If they're not seized.

 

what if your slammed? I got a camber kit up front. just tell them regular sedan specs?

 

If you're dropped more than 1.7-2.0" you will need:

SPC front camber arms with Camber Plates installed
Rear Camber arms
Rear toe bolts

That is the only hope you will have to get to spec. The biggest investment is the front Camber kit.

Running proper camber when slammed requires fairly precise fitment and/or non-agressive offsets though. most guys just opt for silly negative camber so they can drop the car more. It's easier, but costs more in the long run.

 

Rear camber kit is more important than the front kit when you are lowered any amount. The rear toe and camber is affected the most.

Nortex, post your alignment numbers for the rear

 

I dont have any yet. Im on stock sedan springs in the rear right now.