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Alignment Specs for DD/AutoX

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Old 08-13-2009, 12:50 PM
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Default Alignment Specs for DD/AutoX

Going to get my car aligned this saturday.

The car is lowered 1.2" and I'm looking for a good set of specs for a daily driven car that will hopefully see some AutoX.

From research I'm looking at doing:

Camber: -.75
Caster: +5.0
Toe: +1/16 (toe in)

How does this sound? Please Comment

Thanks

Edit: Im running 245's in the front and 285's in the rear, Sumitomo HTR-ZIII. Cheap tires so dont mind a little extra wear.

Last edited by LS1TORQ; 08-13-2009 at 02:25 PM.
Old 08-13-2009, 01:48 PM
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IMO, leave toe at 0, Toe out will make the steering sensitive and it will trail over uneven streets alot more. You can probably only get max -0.9 camber (if lucky), and even then thats not enough so just max it out. - camber is the best handling advantage anyway. at -0.9 It wont eat up your tires, you would have to be over -2 to really cause uneven inside wear.

caster looks fine if you can even get there...some cars are caster challenged.

good luck.
Old 08-13-2009, 02:06 PM
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I drove around for nearly a year with -2.5° camber, +4.5° caster, and maybe ~1/16" toe-in. My front tires are looking worn, but I'm sure that's because of actually running them repeatedly on the track, NOT from driving around on the street!! I found that the car was quite prone to pulling and darting in ruts on the road (ie: on the main freeway from all the truck traffic) but it HANDLED incredibly well on-track, and I also ran 1 auto-x event like that (took 3rd FTD, at my first event ever!)
Old 08-13-2009, 02:06 PM
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My alignment specs are as follows:

Camber: -1 L/R
Caster: +4.5 L/R
Toe: +1/32" (IN)

I do not auto-x, but I was doing a lot of hard canyon runs and some track days and worked out great..for better tire wear, probably take the camber down to ~ -.75 and maybe make toe +1/16" (IN)...I am assuming the auto-x courses are predominantly short/tite.

Ideally you would keep changing your alignment with each event and how the setup differs time to time. You want toe out (-) when a track/course has long/fast/sweeping corners. For shorter corners/tracks that have tighter corners you want to go with toe IN (+). Maybe even leave it as +1/32" like mine and go from there after you get the feel for how the car handles/behaves on that alignment..if anything just drop your front tires a pound on both sides and it's a decent temporary fix

I'm sure Sam can/will chime in soon


EDIT: I am running 275/40-17 Nitto NT-01s and carbotech pads on Strano springs, strano f/r sways, Koni 4/4, and some chromoly d/a rod ended LCAs...
Old 08-13-2009, 02:07 PM
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Originally Posted by Cap'n Pete
I drove around for nearly a year with -2.5° camber, +4.5° caster, and maybe ~1/16" toe-in. My front tires are looking worn, but I'm sure that's because of actually running them repeatedly on the track, NOT from driving around on the street!! I found that the car was quite prone to pulling and darting in ruts on the road (ie: on the main freeway from all the truck traffic) but it HANDLED incredibly well on-track, and I also ran 1 auto-x event like that (took 3rd FTD, at my first event ever!)
Mine's the same way with just -1
Old 08-13-2009, 02:28 PM
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1. So camber should probably be between .75 and 1 degree depending on how fast I want the tire to wear.

2. 1/16th toe-in will help steering be more quick and tight, correct?

3. The more caster the better, right? max factory a-arms can go is 4.5? or 5.0?
Old 08-13-2009, 02:41 PM
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1) & 2) = correct...and everyones preferance is different but toe is something you may find you want to adjust out some if she's real *** end happy. (for what you are doing, you do not want toe-out)

3) again preference...but I think max is like 5 or 5.5
Old 08-13-2009, 08:10 PM
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I think # 1 is not correct for your auto-x, I think car will handle better with - setting on camber, if normal driving I like + camber
just my 0.02'
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Old 08-14-2009, 09:20 AM
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do u like positive camber so the car doesn't grab ruts in the road as much? please expand
Old 08-14-2009, 10:21 AM
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The more negative camber, the more front end grip you have in corners... Up to about -2. The trade off is increases tire wear on the street, more tramlining, care doesn't stop quite as well (less contact patch).
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Old 08-14-2009, 01:05 PM
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I hate how the car has positive camber stock. Makes the outside tire edge wear poorly. I know a ton of people who have that problem in this car.
Old 08-14-2009, 02:45 PM
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Originally Posted by LS1TORQ
2. 1/16th toe-in will help steering be more quick and tight, correct?
I'm not 100% sure about that. I've actually heard that toe-out helps with turn-in?? I thought toe-in was more ideal for street & high-speed (helps with keeping the wheel centered and less prone to wander).
Old 08-14-2009, 04:28 PM
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Originally Posted by Cap'n Pete
I'm not 100% sure about that. I've actually heard that toe-out helps with turn-in?? I thought toe-in was more ideal for street & high-speed (helps with keeping the wheel centered and less prone to wander).
I think your right. I just did some research on wikipedia...

Toe in will reduces turn-in response yet increases straightline stability.

Toe out can help cure wandering associated with negative camber adjustments.

Toe in can help cure wandering associated with positive camber.
Old 08-14-2009, 04:32 PM
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Originally Posted by Sam Strano
The more negative camber, the more front end grip you have in corners... Up to about -2. The trade off is increases tire wear on the street, more tramlining, care doesn't stop quite as well (less contact patch).
from a factory standpoint, what adjustments would you make for a DD to have better handling and even tire wear at the same time? Or is there such a thing?
Old 08-14-2009, 06:16 PM
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Originally Posted by 7camaro7
from a factory standpoint, what adjustments would you make for a DD to have better handling and even tire wear at the same time? Or is there such a thing?
Zero camber, 5 degrees positive caster on the drivers side, 5.5 degrees positive caster on the passengers side, and 1/32-1/16 toe in.
Old 08-14-2009, 06:18 PM
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Originally Posted by Cap'n Pete
....I've actually heard that toe-out helps with turn-in?? I thought toe-in was more ideal for street & high-speed (helps with keeping the wheel centered and less prone to wander).
CORRECT!

I used to run an oval track car, and we ran about 1/8" toe-out, IIRC, but I'd never run toe out on a street car.



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