About to get an Alignment, 2nd opinion please?

JenovaI

I just put SPL front camber and rear camber/toe arms on my z and need an alignment. I currently have KW v3 at max height with settings all in the middle. Stillen sways, stiff rear middle front. Rears are pilot super sport 325/30/19 front are RS3 245/40/19. quaife torsen LSD.

I'm supercharged at 479hp to the rear wheels and my biggest annoyance is how fast I lose traction when I hit the throttle so I'm hoping to focus my alignment specs on that. I do spirited daily driving and canyon runs, no track time yet.

After research I feel like i should go:
FRONT -1.5 camber 0 toe 5.17 caster
REAR -1.8 camber, 1/32" R+ 1/32" L toe in (so like .01 degree toe in total)

Gomer's suggestions makes me think:
FRONT -2 camber 0 toe 5.17 caster
REAR -1.2 camber, 1/32" R+ 1/32" L toe in (so like .01 degree toe in total)

i THINK this is the best I can do for launch and corner traction without going through tires like crazy. Anyone have suggestions otherwise?

OptionZero

reduce camber
get better tires

JenovaI

Normally I'd ask if you mean go further negative camber but I'm pretty sure you didn't even read what I was asking so I'll wait for another reply.

jmroy6

with what he said. Better tires, maybe try playing with your suspension settings to keep the rear end planted?

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2012 370z GTM SC

JenovaI

The numbers in my post are what im CONSIDERING going. Telling me to reduce my camber or play with my suspensions settings MEANS NOTHING because that's what I'm going to do tomorrow when I get an alignment.

I'm here looking for drivers with experience using various camber settings to suggest changes to my proposed starting point.

JenovaI

For instance, is my proposed -1.8 rear camber too negative? Can I get away with -1.2 to get more straight line traction without sacrificing too much grip in the turns since I have a stiff rear sway bar? I don't have experience with this type of suspension modification.

gomer_110

I'd go with at least -2.0° camber upfront, and no more than -1.5° camber in the rear. If you're looking for straight line grip only, I'd go with maybe only -0.5° camber in the rear.

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'11 370Z Nismo #528 Fast Intentions | Stillen | Motordyne | Uprev | CSF | Zspeed | Z1 Motorsports | AST | Swift | SPC | SPL | Whiteline | Hotchkis | Bride | Schroth | Robispec | Cusco | Nismo | Volk | Forgestar | Hoosier | RJM
'17 Titan Bone Stock

JenovaI

Hmm, definitely not only looking for straight line online grip. But I'll definitely reduce under -1.5.

How bad does -2 camber wear our front tires in this car? Will i be swapping tires from side to side trying to avoid a diag camber wear or will it be fine?

gomer_110

Camber wear on the front is will in some part be dictated by how much aggressive driving they see. If the tires see a lot of hard cornering the camber wear won't be much at all. If they see a lot of highway miles it might be more of an issue. Biggest killer of tires though is poor toe settings.

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'11 370Z Nismo #528 Fast Intentions | Stillen | Motordyne | Uprev | CSF | Zspeed | Z1 Motorsports | AST | Swift | SPC | SPL | Whiteline | Hotchkis | Bride | Schroth | Robispec | Cusco | Nismo | Volk | Forgestar | Hoosier | RJM
'17 Titan Bone Stock

osburnrs

I'm at 3 rear and 2 front but that's my track setup. I'm s/c too and with Pirelli slicks I still have trouble keeping the back end under it. Coil overs full stiff front and soft on the rears.


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JenovaI

From what everyone has been saying, more camber rear = less traction from acceleration. Have you tried it with less rear? was it worse?

OptionZero

maybe you should read up on how these settings work?

Negative camber generally improves grip while turning

Closer to zero camber is better for straight line acceleration.

No one can give you an exactly perfect setting because you're not driving on some track where there are timed laps to dial it in, you're driving on some randomass road on a personal car

I also find it hilarious that you're trying to get some magic camber setting to help you go faster but also balk at the idea of potential tire wear. Guess what? Hard driving + lots of grip = worn tires. Its sort of just . . . physics? tires are there to grip, the more they grip, the faster they wear. Thats common sense, its why your the prius comes with shitty tires that never wear and last forever but don't do crap for handling, but some spec'd out hardcore racer will have to swap tires frequently

if you want more grip, get better tires
if you think you're losing rear traction in turns, more camber, if you want straight line acceleration, less camber

the factory settings, at least on a nismo, has a bit under 2 deg camber rear and 1 deg front, its not much, but i'm fairly certain they have more camber in rear as a conservative, safety oriented approach.

The track guys can chime in, but i believe when you're trying to go fast you will want more camber in front than rear; the front tires are doing the turning/steering and you want the front tires to have as much grip as possible while turning to dial out understeer. Pretty much everyone tracking their Z is trying to reduce this car's understeer (bigass rear bar, more tire up front, etc)

for you, not tracking the car but with massively increased power . . . again. Get better tires. PS2 Cups or somethin.

JenovaI

You seem like a very angry person. So much written here with so little actual information. You seem so intently focused on bashing my request for help that you can't even read through the entire request and respond in an applicable manner. What are you doing on a site intended to help users help each other?

JenovaI

Speaking of toe settings, what are yours?

osburnrs

You have to consider the difference between street and track. At -2 my front tires wear even across the tire during heavy cornering and the setup for my car does the same on the rears at -3. At less than that, my tires wear severely on the outside edge. I'm running ksport coilovers so my car may roll differently than yours or anyone else's since it's half Nismo and half aftermarket. You just have to monitor your tires and the seat of your pants to find your happy dance. I think your original post is a good starting point for your driving habits. My two cents and happy driving to everyone!


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