C5 Z06 performance alignment spec
Thread Starter
Racer
Joined: Aug 2006
Posts: 258
Likes: 1
From: Saratoga CA
C5 Z06 performance alignment spec
I have a 2004 Z06 that I autocross occasionally and drive daily. I want to get some sort of performance alignment to get th emost out of the car. Does anyone have any good alignment specs with al ittle bit of camber that I could use? I appreciate the help.
Le Mans Master
Joined: Dec 2006
Posts: 7,251
Likes: 16
From: Phoenix Arizona
2.5 negative camber on both fronts 1.5 neg on both backs as little castor as possible and 1/8 total tow out in front and 1/8 total tow in, in back 
and the vette will corner like crazy!!!!!!!!
and the vette will corner like crazy!!!!!!!!
Safety Car
Joined: Aug 2000
Posts: 4,933
Likes: 30
From: San Rafael CA
That will "corner like crazy" ..... but the OP said "autocross occasionally and drive daily" ........
Might that alignment be a tad "aggressive" for a daily driver ????
Here's some alignment numbers, which for a "street" car are somewhat extreme ..... watch the wear on the INSIDE edge of your tires .... especially if you do a lot of highway driving.
Front Individual Toe +0.03 degree
Front Sum Toe +0.06 degree
Steering Wheel Angle 0.0 degree
Front Individual Caster +6.9 degree
Front Cross Caster within 0.50 degree
Front Individual Camber -1.0 degree
Front Cross Camber within 0.50 degree
Rear Individual Toe 0.0 degree
Rear Sum Toe 0.0 degree
Rear Thrust Angle 0.0 degree
Rear Individual Camber -0.80 degree
Rear Cross Camber within 0.50 degree
Thread Starter
Racer
Joined: Aug 2006
Posts: 258
Likes: 1
From: Saratoga CA
Thanks guys! I also sent an email to LG motorsports to see what they say, but the specs you (BlackZ06) posted look like they might be about what I'm looking for.
The other specs look like they would most certainly be a lot of fun... but I'm not so sure I can justify a new set of tires a week, haha
The other specs look like they would most certainly be a lot of fun... but I'm not so sure I can justify a new set of tires a week, haha
Burning Brakes
Joined: Aug 2004
Posts: 837
Likes: 2
From: Derry NH
Did you try posting in the RR/AX section? I don't think all C5's are capable of reaching -2.5 degrees without camber plates anyway.
I have had several people tell me to go -1.5 front, -1.0 rear camber after starting with Z06 specs (for toe, etc).
I have had several people tell me to go -1.5 front, -1.0 rear camber after starting with Z06 specs (for toe, etc).
Melting Slicks
Joined: Jul 2006
Posts: 2,094
Likes: 5
From: The 7th layer of hell - Western Washington
I've had as aggressive as -2.0 camber up front, played with toe-out, lower pressures, higher pressures, all sorts of stuff over the last couple years (and two full dead sets of PS2's) - this is the best I've found so far, but it's still not perfect. I also daily drive, auto-x and track the car...
Front Camber -1.2
Front Toe +0.02
Caster even (I'm not picky on this one)
Front PSI (hot) 36
Rear Camber -1.0
Rear Toe 0.00
Rear PSI (hot) 32
Front Camber -1.2
Front Toe +0.02
Caster even (I'm not picky on this one)
Front PSI (hot) 36
Rear Camber -1.0
Rear Toe 0.00
Rear PSI (hot) 32
Burning Brakes
Joined: Feb 2006
Posts: 1,085
Likes: 3
From: Ottawa Ontario, Canada
Might I add that you should consider the tire manufacturer's recommendations for camber also...
With a hard tire like the C5's OEM GoodYear F1 runflats you can't run much camber at all without burning off the inside of the tread in short order (the sidewalls are too stiff).
With a softer sidewall tire like the Nitto RII you can run MUCH more camber with no ill effects. I've never run any crazy negative camber on my RIIs but I do have them set at -0.75 degrees both front and rear, zero toe, 100% street driving (99% hwy), and with the tire worn almost completely bald the wear was pretty much DEAD even across both the front and rear tires (285/35-18 on 10.5" wheels F, 305/35-18 on 10.5" R) after ~12,000 miles. I think Nitto reccomends up to -5.0 degrees depending on the mix of street and track driving the tire will see, though I can't remember where I read that.
The "hard as rocks" F1 runflats can't even handle -0.75 degrees from what I've heard, and they are a much narrower tire (affected less from side to side by camber settings).
Every tire will be different based on its sidewall construction - ask the manufacturer and go from there. I'm thinking my RIIs would be perfectly happy running around on the street at -1.25 degrees, maybe more.
With a hard tire like the C5's OEM GoodYear F1 runflats you can't run much camber at all without burning off the inside of the tread in short order (the sidewalls are too stiff).
With a softer sidewall tire like the Nitto RII you can run MUCH more camber with no ill effects. I've never run any crazy negative camber on my RIIs but I do have them set at -0.75 degrees both front and rear, zero toe, 100% street driving (99% hwy), and with the tire worn almost completely bald the wear was pretty much DEAD even across both the front and rear tires (285/35-18 on 10.5" wheels F, 305/35-18 on 10.5" R) after ~12,000 miles. I think Nitto reccomends up to -5.0 degrees depending on the mix of street and track driving the tire will see, though I can't remember where I read that.
The "hard as rocks" F1 runflats can't even handle -0.75 degrees from what I've heard, and they are a much narrower tire (affected less from side to side by camber settings).
Every tire will be different based on its sidewall construction - ask the manufacturer and go from there. I'm thinking my RIIs would be perfectly happy running around on the street at -1.25 degrees, maybe more.
