DivZero

iTrader: (1)

I'm taking my car to get an alignment in the next couple of days and would like your feedback on the settings I'm condsidering. It is a daily driver with 1-2 autocrosses a month.

The car:
2006 G35 Sedan
100% Stock
245/45/18 Dunlop Star Specs (10mm wider than stock)
Fair amount of body roll

I am trying to reduce the effects of body roll, increase turning feel and quickness, and preserve my tires for around a year.

Front:
Toe out: 1/16 inch
Camber: -1 deg
Caster: 8.75 deg (that's max Infiniti recommends)

Rear:
Toe in: 1/16 inch
Camber: -1.5 deg

What do you think?

03threefiftyz

iTrader: (25)

You won't "reduce body roll" with an alignment. I would get as much camber as you can in the front....same with caster.

DivZero

iTrader: (1)

Thanks for the response. I'm trying to minimize the effects of body roll if that is possible with alignment settings?

03threefiftyz

iTrader: (25)

In a way.....camber/caster isn't adjustable with the factory pieces in the front, though.

davidv

iTrader: (2)

Daily driver and autocross is a compromise. Your camber is weak for autocross. Dialling more camber and you will soon be tossing street tires in the trash.

DivZero

iTrader: (1)

Yep a compromise is what I'm looking for with the settings I put in the first post. Do these look decent for compromise? -1 is the most negative in stock spec. Rear camber of -1.5 is .42 more negative than spec. However, with that being said, I am adding 10mm wider and .4 inch taller tires... this could affect the stock specification but I'm not sure how.

I am a little more worried about the front toe out as 0 is the minimum and I want 1/16. Rear toe in is within spec.

03threefiftyz

iTrader: (25)

I run 1/16" toe out in the front of my car....

DivZero

iTrader: (1)

Any extra wear on the inside of your tire (I have seen more inside tire wear from toe than camber on most street cars)?
What do you run on the rear for toe?

03threefiftyz

iTrader: (25)

I only drive the car to and from events. I wear the outsides then flip the tires on the wheels.

For reference...my alignment. This suits me, and I have tried a bunch of different set-ups...

Current:
Front..
Camber: -3.1
Toe: 1/16" out
Caster: 9.3

Rear:
Camber: -2.0
Toe: 1/16" toe in

JDMStanced

iTrader: (16)

^^that's a big number for camber.
May i ask why you have lower camber in the front than rear for autox??
My front is -1.7 and rear is -1.5 lol

Voboy

iTrader: (58)

Do you already have after-market sway bars?

scotts300

iTrader: (46)

I agree with Mike's numbers above. Although I run a tad more front negative camber, I, too, have max'd the front caster and run a touch of toe out. I also run a touch more negative rear camber, which is recommended for the Hoosiers.

He doesn't. It's not a big number for an autox car.

Agreed. Sway bars are a great improvement on the cheap.

OP - see you out at Marina on Sunday?!?

DivZero

iTrader: (1)

Thanks for the suggestion. Unfortunately I can only replace the front ARB as per stock rules. I'm not having a lot of problem with the tail sliding but am having decent understeer, so according to Henry Watts in his book Secrets of Solo Racing, I shouldn't be adding just a front bar. Although my may change when I install the star specs. My tires now are crap.

Scott, see you there. I'm in RG2. How about you?

mw9

iTrader: (51)

nice info guys

97supratt

iTrader: (61)

+1

Hoosiers love negative camber because they're a square setup. The alignment setup above looks good for stock bushings but eventually they'll go bad and need replacement. Replacement arms are a must when going into race setups. Also, auto-x setups are completely different from road race setups in terms of rear toe & camber.

JDMStanced

iTrader: (16)

Let's give OP some numbers that are wise for street use and Autox use...i need to know too
i'm afraid to go with -2 front as i don't know how much inside wear i'll get. If little, i won't hurt to have that camber

scotts300

iTrader: (46)

RG6, so I won't arrive until the afternoon.

97supratt

iTrader: (61)

-2.0 front camber is pretty basic if you ask anybody who races. It's not very aggressive. As long as your tire pressure is properly setup, you will not have aggressive tire wear. Make sure your toe/caster is dead on in order to avoid other tire wear issues and you should be fine. You can always cross rotate your tires if it is feasible.

betamotorsports

iTrader: (1)

Well... maybe. Carter Thompson achieved a lot of success in BS with a pretty big front ARB, Sometimes the reduction in body roll helps with camber up front (less camber loss in roll). Also, it helps plant the rear so a slow in, fast out driving style can work pretty well. You can't drive a 350Z like a Miata on an autocross course.

03threefiftyz

iTrader: (25)

You can still get the non-adjustable version of the CT bar from stranoparts. I actually have one on my car.

It's a heavy SOB....