: Correct alignment specs???

Ryan's '05-V
07-18-05, 11:14 AM
I found these on the FAQ site and just want to confirm these are correct and haven't changed. I have a 2005 and don't trust the shop I'm going to has this loaded in their machine. That's why I want to bring it with me. I'm replacing my tires at almost 11,000 miles and the outside of the tires has worn more than the inside. I figure once my new tires are installed and balanced I will have it aligned.

Thanks, Ryan
What are the alignment specs for the V?


Camber: Range: -1.0 to 0.0 / Optimal: -0.5
Caster: Range: 4.6 to 5.6 / Optimal: 5.1
Cross Camber: Range: -0.5 to 0.5 / Optimal: 0.0
Cross Caster: Range: -0.5 to 0.5 / Optimal: 0.0
Sum Toe: Range: 0.0 to 0.4 / Optimal: 0.2
<LI>Toe: Range: 0.0 to 0.2 / Optimal: 0.1

Camber FE1: Range: -0.6 to -1.4 / Optimal: -1.0
Camber FE3: Range: -1.0 to -1.8 / Optimal: -1.4
Cross Camber: Range: -0.75 to 0.75 / Optimal: 0.0
Sum Toe: Range: 0.0 to 0.40 / Optimal: 0.2
Toe FE1: Range: -0.05 to 0.24 / Optimal: 0.12
Toe FE3: Range: 0.0 to 0.24 / Optimal: 0.12
<LI>Trust Angle: Range: -0.15 to 0.15 / Optimal: 0.0 Note no FE4 entries... but they shouldn't be *too* far from the above. Based on the above ranges, what works well on my Z06, and looking up what M5 guys are running, i cobbled together some recommendations (haven't tried these... just MHO):

Track Front:
-2.2 degrees negative Camber (if you can get that much)
As much Positive caster as you can get without sacrificing camber.
<LI>Neutral (0) Toe to 1/16" Toe OUT Each, 1/8" Total Max. [1/16" Toe out = -0.06 deg]

Track Rear:
-2.2 degrees Negative Camber (if you can get that much)
1/8" Toe IN Each, 1/4" Total Toe IN [1/8" Toe in = +0.12 deg]
Rear Toe should never be Toe out (negative)

07-18-05, 12:14 PM
Spec's in the FAQ are latest and greatest.

Ryan's '05-V
07-18-05, 01:54 PM
Ok, thanks and thanks again as I saw they were your from you.

07-18-05, 09:12 PM
I'm new...whats the difference between FE1 and FE3?

Ryan's '05-V
07-18-05, 10:23 PM
I guess I need to know what to use as mine is being aligned tomorrow morning and the shop may call me and ask me what they should use. I guess I may need to call the dealer to figure that out if needed.

07-18-05, 11:00 PM
Thanks for that too, im gonna need it this week too.

07-19-05, 09:50 AM
Make sure you bring a copy of these specs with you. I just had an alignment done at a pretty decent shop. They told me that they didn't need the specs because "the ones for your car are in the computer." I asked them to check it against the ones I had from the FAQs. Totally different. I had them do the ones from the FAQ.

Ryan's '05-V
07-19-05, 09:52 AM
Yeah, they told me it is normally in their computer so I am going to call back now to make sure they use the ones I left in the car. That was my intention but I need to make it clear.

07-19-05, 10:59 AM
I'm new...whats the difference between FE1 and FE3?

The FE1 is the stock regular CTS luxury and base model (soft) suspension. The FE3 is the CTS Sport suspension option. The V alignment is likely similar to, or exactly like the slightly more agressive FE3 alignments, since they both use the Nivomats. One can get more agressive camber, but tire wear will suffer.

The only real difference between the two is the optimum rear camber.

07-19-05, 12:27 PM
Here's a thread I posted a while back about Suspension RPO Codes:

'CTS-V Suspension Primer'