The Official 370Z Autocross Thread

[Ruff]

Originally Posted by ChrisSlicks

I'm running 275 front 305 rear. Didn't really want the 305 rear but it was the best fit diameter wise. I think the front is pretty much maxed out for the stock size rims. Hoosiers would help but I think you'll be cording them pretty quickly with the stock alignment.

The stock shocks actually seem to work pretty well in conjunction with the uprated sway bars, although probably not quite as well in stock class as you are stuck with the stock rear sway bar.

That's your problem right there with the low speed understeer. And no way in hell are you maxed out on 275s on stock wheels, we run 295 hoosiers on the stock 18x8 350z wheels with no problems, and by far the quickest setup with the car being super neutral. Unless you are talking street tires that are dual purpose. Then you're on your own and the car will kinda suck at autoxing. Until you got to a square setup, you'll going to have tons of understeer auto-xing a Z. And with that much rubber up front, even with stock alignements, they last quiet a while.