The Official 370Z Autocross Thread

[ChrisSlicks]

Originally Posted by OppositeLock

After skimming through the thread I saw a few other people talking about competing in SCCA C-Stock. Does C-stock really allow slicks? For some reason I thought it was DOT tire only, but looks like I'm mistaken. What are the other allowances I should be aware of besides front bar?

What slicks are you guys using, and is the consensus 285's on all 4 corners?

I've got 2 autox's under my belt on the stock RE050s, time to step up.

Yes, stock class allows slicks - DOT slicks is the catch. Personally I would prefer that stock class was street tires as originally intended and leave the slicks to the prepared categories, but alas that is not the case.

For SCCA the fastest street legal slicks are Hoosier A6's. 285 is a good size all around for the short courses they run.

I'm in the prepared class and run 315 front 345 rear V710 on after market wheels, but they are too big for 60 second courses as there is no way to get heat into them. They are good on our clubs 100+ second long course with 6-7 runs a session though.

The other big allowance for stock class besides a front sway bar is an aftermarket or adjustable struts. The catch is that they must be exactly the same length as stock, so options are extremely limited and expensive. You can adjust suspension (camber/toe) using factory adjusters. You can add a high-flow air filter (K&N etc) but not a cold air intake.