Should I stay with S04 Pole Position or get anything else?

ScottOmatic

Kenchan says the Pole Positions run a little small, I am most likely going to get S-04's this month and I plan to run 285's all around.

sambar

Problem is I am a little anal about matching the sidewall height on the ratio. 245/40 and 275/35 are almost same sidewall height.

I could do 255/35 and 295/30 they're really close but I'm wondering if the extra width is going to make a difference. I like the steering feel and grip just perfect right now, not sure if I will regret changing it . I don't mind if tramlining increases but I would be bummed if steering feel got affected.

sambar

Wait, did you say 285's all round - square setup? Aren't the wheels in front and rear different size, how well does this car adapt itself to a square setup? Once again sorry if these are noob questions, not familiar enough with the car yet.

jchammond

Geat a pair of rear Sport 19x10 +30 offset & put on the front/you will then be able to run the square set-up & rotate tires if you wish....
Fronts will come out way more flush & you may want to add a rear spacer to flush the rear's.
Got a friend on the Forum doing it.
running the same tires you already have are a good buy & good tire.
The Michelin PSS tires (in the same size) would reduce the weight of each tire by 4 pounds,,,giving you more acceleration (less rotating mass)
Multiple variations out there; pick what you like!

__________________
MazWorx built long block | FI-TT-100 Stage 2.75 | IPT built 7A/T

http://www.the370z.com/members-370z-...s-musings.html

ScottOmatic

First as for the sidewall ratio, yeah the front tires may look a little taller with the same tires as the rear because the rims are narrower. Yeah, ideally you'd probably like the sidewalls to look the same or a little bigger in the rear but first and foremost IMO is handling.

The idea with a square setup is that you give a little grip more to the front end, it should understeer less because the fronts aren't going to be giving out that much earlier with the now equal tire sizes.

People say that the skinner front rims can handle the wider with just fine and a lot of the track and autocross guys are going this route. I have an older Z that came with a square setup and I am really used to similar tire dynamics that the square setup has.

Of course, if you plan to do some suspension mods in the near future you can dial-out a lot of the understeer that way, but tires are a cheap and straight forward route. After all, they are the only thing between the car and the road!

As for the extreme tire category and the RE-71's. I was looking at these but my car is not ready to track yet and I don't know when that will be, so I think the few hundreds of dollars and maybe double the tread life of the Pole Positions might be just fine for the time being.