What specs are you guys using for autocross, yet still streetable? I've got a 2003 on Track Rays rims.

Thanks,

 

I probably should also mention that I'm running Azenis 245/40/18 up front and 255/40/18 in the rear. AutoX perfromance is the goal, but so is longetivity of the tire.

Thanks again...

 

not really much you can do with the alignment on this car.

run as much negative camber you can get out of the fronts, somewhere around -1.5 in the rear. as for toe, that's really up to you. some people prefer 0 toe. others want a bit out. nissans spec is OK with me.

 

You have to change the A-Arms to give front camber adjustment. Don't know if you change class if you change the A-Arms. If you can change them, than the amount of camber depends on the tires, your driving, and the coarse. For street tires and AutoX - I would say somewhere between -.5 and -1.5. For R-compond tires I would say somewhere between -1.5 and -3.0.

 

Changing A-arms moves you out of stock class, but you can run in BSP.

 

I ran the following last yr with street 265's (all 4) on my Track Rays:
Front
Toe: 0
Rear
Toe: .25 in


The car handled pretty well with around 10psi more pressure in the front tires than the rears. It would still push in the corners, but the push was controlable once I learned how to handle it. The .25" toe did wear my front tires on the street... it may be a little extreme.

This yr I'm running R-Comps and non stock-class setup, so I really can't compare it to last yrs setup. But I did bring my front toe back to 1/8" out, and it seems to handle well... ie much less push than last yr.

 

Front:
Camber: -1.4 degrees (350z springs lowered me a bit)
Toe: 0 degrees

Rear:
Camber: -1.9 degrees
Toe: .16 degrees total toe in (+.08 each side)

This seems to work well for me with 245/45/17 all around on 17x8 rims. I run 37lbs in front and 34lbs in the rear (hot). I have a tire pyrometer and these pressures seem to be where the tires run an even temp distribution. Paxed 5th of 70 and 5th of 50 in the last two events, so the adjustments cant be all bad...

Tire wear is fine - not really any different than stock. It definately has a snappier turn-in with zero toe than it did with a 'stock' alignment - the only draw back is it can get a little bit wandery on the highway, but its not really even noticeable after you get used to it.