I am VERY close to ordering some I-forged FS-6s in Brushed aluminum finish. But:

1) The only sizes they have are in 8 and 10 inch widths. How would that much stagger (front/rear) affect performance understeer wise? Would I be better off with 8" all around?

2) I know that for an 8.5" front wheel, your suposed to run 245/35 series tires....but could you get away with running 245/40 tires. I like the look of the larger tire and the ride quality would be a tad better. (I know there would be a slight spedo error) But would there be any problems fitment wise, such as rubbing?

Thanks alot in advance.

 

a 245 is the largest that is supposed to be run on the 8", so you shouldn't have any problems

 

Damn....those are gonna look HOT!

Post pics *as soon* as they're on!

 

You're damn right they will!

So, whats the verdict. (8"---10") (8"---8") OR!? (10"---10")

Also, my other question is the stock Z has a slightly larger rear overall diameter...is it ok to even them up...ah la, run a slightly larger front tire ratio.

 

I would definitely run....

19x8 front/19x10 rear

245/35/19 front
275/35/19 rear

 

I agree with Dlovtsur. 8" in front and 10" in back.

Post pics when you get 'em!

 

Yup, looks like you're at the very minimum of the 245/35 spectrum with the 8" wheel. So it looks like

19,8 245/35/18
19,10 275/35/18'

That would do it.

The Sage. lol.

 

I of course based this on the S03 tire specs. Didn't look at anything else.

 

I would go with 8" in front and 10" out back. It shouldn't be too bad. On the street, you'll never know the difference. On the track, I don't it'll be any worse than in stock form. Best of luck and post some pics when they're on--

 

My question is can i run?

Front: 245/40 /19
Rear: 275/35/19

The spedo will be off...I know by a little, but will this configuration fit?

 

actually your speedo should be fine because you are just looking to increase the o.d. of the front tire. The rear should be in spec. I don't forsee a problem with the proper offset wheel. the Dunlop SP9000 is the cheapest I've found in that size.