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Alignment spec?

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Old Dec 26, 2007 | 03:13 PM
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Default Alignment spec?

Anyone have any preferred alignment settings for the C6? I'm going in next week. I noticed from the factory the inside shoulders wore out before the outside edges.
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Old Dec 26, 2007 | 03:18 PM
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Drive harder!

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Old Dec 26, 2007 | 03:25 PM
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If you set the car up perfectly to the stock specs, YOU WILL STILL run down the inside of the tire first. The car is set with high camber and will wear out the inside of the tire. IF you want the car to handle the curves and twisties at the top of it's game, go with the stock setting. If you want to get mileage out of your tires, drop the camber down to -0.1 on all wheels.

For Mileage:

Front
Camber -0.10
Caster +7.90
Toe -0.10

Rear
Camber -0.10
Toe 0.00
Thrust angle 0

For autocross or Corner carving, use the stock settings.



Elmer
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Old Dec 26, 2007 | 06:37 PM
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thanks
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Old Jan 8, 2008 | 10:02 AM
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Originally Posted by eboggs_jkvl
If you set the car up perfectly to the stock specs, YOU WILL STILL run down the inside of the tire first. The car is set with high camber and will wear out the inside of the tire. IF you want the car to handle the curves and twisties at the top of it's game, go with the stock setting. If you want to get mileage out of your tires, drop the camber down to -0.1 on all wheels.

For Mileage:

Front
Camber -0.10
Caster +7.90
Toe -0.10

Rear
Camber -0.10
Toe 0.00
Thrust angle 0

For autocross or Corner carving, use the stock settings.



Elmer
Any thoughts on straight line traction?? Here's my reason for asking....I have a 2005 with a few mods (Z51, with 392 RWHP). I'm running 305/19 Michelin PS2s on the rear (went to these to try and improve on the stock runflats) and it is still nearly impossible to decently hook up in 1st,2nd,or 3rd. If I don't pedal like I'm driving in snow, a good running Honda can drive past me. Well maybe I'm stretching it a little.

Nonetheless, here's what I've noticed...After pulling into my garage with the car on a level surface, I inspected my rear tires. There is a significant difference in the contact patch from the inside to the outside of my rear tires. Initially I wrote this off as the more aggressive camber alignment of the Z51. But, it is apparent by the road dirt/dust on the tire that only about 70% of the inside portion of the tires is making really solid contact. Not to say there is no contact on the outer portion - just clearly not the same.

I have driven many high HP/torque street cars and have never experienced this much difficulty getting the power to the ground. Although it is doable and I have polished my technique - it is just not very enjoyable, not to mention, a bit tricky at times. I would sure appreciate any thoughts or suggestions ???
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Old Jan 8, 2008 | 12:00 PM
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Originally Posted by C6GO
Nonetheless, here's what I've noticed...After pulling into my garage with the car on a level surface, I inspected my rear tires. There is a significant difference in the contact patch from the inside to the outside of my rear tires. Initially I wrote this off as the more aggressive camber alignment of the Z51. But, it is apparent by the road dirt/dust on the tire that only about 70% of the inside portion of the tires is making really solid contact. Not to say there is no contact on the outer portion - just clearly not the same.

I have driven many high HP/torque street cars and have never experienced this much difficulty getting the power to the ground. Although it is doable and I have polished my technique - it is just not very enjoyable, not to mention, a bit tricky at times. I would sure appreciate any thoughts or suggestions ???
Camber is dialed in from the factory so you'll have better traction/footprint in turns (it's a sportscar afterall). As a dragracer I think dialing out all the camber would be the way to go (at some expense to cornering grip)..
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Old Jan 8, 2008 | 12:06 PM
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Originally Posted by C6GO
Any thoughts on straight line traction?? Here's my reason for asking....I have a 2005 with a few mods (Z51, with 392 RWHP). I'm running 305/19 Michelin PS2s on the rear (went to these to try and improve on the stock runflats) and it is still nearly impossible to decently hook up in 1st,2nd,or 3rd. If I don't pedal like I'm driving in snow, a good running Honda can drive past me. Well maybe I'm stretching it a little.

Nonetheless, here's what I've noticed...After pulling into my garage with the car on a level surface, I inspected my rear tires. There is a significant difference in the contact patch from the inside to the outside of my rear tires. Initially I wrote this off as the more aggressive camber alignment of the Z51. But, it is apparent by the road dirt/dust on the tire that only about 70% of the inside portion of the tires is making really solid contact. Not to say there is no contact on the outer portion - just clearly not the same.

I have driven many high HP/torque street cars and have never experienced this much difficulty getting the power to the ground. Although it is doable and I have polished my technique - it is just not very enjoyable, not to mention, a bit tricky at times. I would sure appreciate any thoughts or suggestions ???
The question that come to my mind is, "What is your camber?" If you see that much camber on your wheels then you need it checked. I'd hazard a guess that you are running more than the -0.45 (stock). The Z is set to -1.0. I run -0.1 and that puts the tires pretty close to flat on the ground. Think of a solid rear axle (e.g. Camaro) the camber on that is 0.00. The 4 wheel independent suspension of the Vette needs a "touch" of negative camber to settle down under weight to pretty close to 0.0

What you are describing on the dirt sounds strange.


Elmer

Elmer
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