Driver_WT

Anyone have the factory alignment specs for a 2005 C6.

Thanks.

Buffy

factory specs
front
camber -0.45 +/- 0.60 (+0.15 .. -1.05)
caster 7.90 +/- 0.60 ( 7.30 .. 8.50)
toe in 0.20 +/- 0.20 total ( 0.00 .. 0.40)
rear
camber -0.45 +/- 0.50 (-0.05 .. -0.95)
toe in 0.00 +/- 0.20 total (-0.20 .. +0.20)

But more camber is good.

johnodrake

Here are specs for a 2006 - including mine.

davekp78

Do you nean more camber in the positive direction, or negative direction?
More (negative) camber is not good if you are looking for longer tire life. More positive camber will reduce roadholding capability.

Buffy

More negative camber. At least in my experience, that improved both handling and tire life.

I measured tread depth at 1500 mile intervals and found that the tires were wearing more at the outside with 0.4 - 0.6 degrees negative camber. I ended up with about 1.2 degrees front and 0.8 degrees rear, could probably have used a little more.

Of course some of this is going to depend on your driving style, tires, etc. I've replaced the original GY tires with PS2s, they don't seem to need as much negative camber. So far, at least. I should be doing my 3K mile check soon and may adjust after that.

P.S. The numbers in the "moderate" column of that spreadsheet are very close to what I ended up with as optimal numbers.

Driver_WT

My left and right front tires are both wearing on the inside. I was thinking might be a little too much negative camber, but we will see.

Vetteinplano

Like this?

BAMAGOLFER

natejohn

Yikes! ...I just replaced all my tires after I was told by the dealer my fronts were showing "cord"! I couldn't believe it but after he took me out to the lift...there it was, not as bad as the above but very close. Tires had about 24K on them and one Auto-X, Rears were down to the "wear bars" but showed even wear across the tires.

Rears are easy to keep track of but the inside of the frt tires are hard to see and since the outer was looking good.....sigh.

Haven't taken it in for an alignment as I can't make up my mind going with stock or "Auto-X/sprited street )

IC6

wow ... looks like the outside of that tire wasn't even touching the pavement...

Buffy

Now that's just not right. Too much negative camber can increase wear on the inside, but I don't think you can get enough to account for that kind of wear.

Either those tires were toed in so far they were looking at each other or something else is badly wrong.