The Official 370Z Autocross Thread

[Mancub]

Originally Posted by PharmDZ

Keep your car in B-street for now. More competitive and since you're limited on modifications you can do, it's cheaper. Trust us. lol

So, for my future reference, looking at the 2016 guidelines (shopping list) for B street:

13.2
-A,E: I can get paddles for my convenience.
-G:Roll bars can be bolted or welded in, cages must be bolted
-I: I can add a rear trailer hitch.

13.3
- Any tires that fit the OEM wheels and fenders are OK.

13.4
- I can use rims +/- 1 inch from stock. Spacers are OK, but iffy.

13.5
- Shock absorbers.... No idea... Help?

13.6
- I can get new pads, and should probably upgrade to the oem sport brakes.

13.7
- I can use 1 aftermarket bar. Any bushing material is permitted.

13.8
- Suspension... pls help?

13.10
- Does this mean I can use a cat-back exhaust?

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[PharmDZ]

13.3
- Any tires that fit the OEM wheels and fenders are OK.

Bridgestone RE-71R 285/35r19 square on OEM Rays 19x9 front 19x10 rear rims is your best bet here. You can get a set of those for $600 on the forum if you're patient.

13.5
- Shock absorbers.... No idea... Help?

Basically Koni Yellows are your most reasonable choice here. Won't break the bank completely, adjustable, quality shocks. Can't change the springs though.

13.7
- I can use 1 aftermarket bar. Any bushing material is permitted.

Hotchkis front sway bar, OEM rear bar. Again something you can usually pick up cheap on the forum.

And yes you can use a cat-back exhaust. Not much else for power mods or that'll bump you up a class. STR sucks for the Z because you're limited to 255 tire size which is nothing for such a heavy car.

[Mancub]

Originally Posted by PharmDZ

Bridgestone RE-71R 285/35r19 square on OEM Rays 19x9 front 19x10 rear rims is your best bet here. You can get a set of those for $600 on the forum if you're patient.

Won't the change in width from Base to Sport wheels knock me out of BS?

[gomer_110]

Originally Posted by Mancub

13.2
-A,E: I can get paddles for my convenience.
-G:Roll bars can be bolted or welded in, cages must be bolted
-I: I can add a rear trailer hitch.

No reason to get a roll bar or cage just for autox.
Trailer hitch is completely legal. A lot of people have little utility trailers to get there autox wheels/tires to the event.

Originally Posted by Mancub

13.2
13.4
- I can use rims +/- 1 inch from stock. Spacers are OK, but iffy.

IIRC spacers are illegal in stock class. Last I knew there were very specific rules regarding what limited deviations from stock wheel offsets could be. Allowing spacers would fly in the face of that rule.

Originally Posted by Mancub

13.6
- I can get new pads, and should probably upgrade to the oem sport brakes.

My understanding is going to oem sport brakes would be illegal unless you swap everything that makes a sport model a sport model. It's an all or nothing type proposal.

As far as pads go I'd recommend Ferodo DS2500 pads.