Alignment Spec Help
 

Car is going in Monday for an alignment so I'm reviewing the ride height as well as the previous alignment specs.
From research I'm still confused as to exactly what is Euro spec vs US and what would be the optimal for a street/DE car.
Heres the suspension/tire set-up
Front
22mm T-bars
22mm Sway Bars - oem
Bilstein HD's
225/50/16's on 7/16's
Camber -1.1 degree
Rear
28mm T-bars
21mm Sway Bars - oem
Bilstein Sports
245/45-16 on 8/9x16's
Camber -1.2 degree

Slight rub upfront at times even though the fenders are rolled. No clearance problems in the rears. How much more negative camber can I get up front and should I add more to the rears?

John

The amount of (-) camber you have up front is all I could get out of my completely stock strut mounts. I think mine are @ -1 deg. on both sides. To get more, i'd need offset camber plates/monoballs and probably have to widen the strut tower opening in the body with a grinder.

If I recall correctly, a more aggressive setup utilizes more neg. rear camber than you currently have set.

Here's a good topic on alignment issues.

Home Alignment

There's alot more to be had from the board as well. Maybe not only this Tech. Forum, but maybe the Racing & Autocross Forums?

How long do your tires last when using that much camber? Do they wear evenly? Going from memory, when I ran that much camber on my street car, I ate up the inside edge of some new tires.

Conversly, I run 1.5 to 1.75 degrees negative camber on my Mustang Cobra and never have any problems.

Regards,

Jerry

Jerry,
i just put new rubber on, but the old rubber wansn't worn any more on the inside then the outside. I will use these tires for the street and some track time so they will be rubbed off on the outside anyway. If the inside wear is worse I'd just flip them inside out.

John

John,
My alignment specs are:
Front:
1/16 toe in
-1.0 camber
5.5 caster

Rear
1/16 toe in
-1.3 camber

While I'm very happy with this set-up with my 225/40/16s in front and 245/45/16s in back, I think neg camber should be more like -1.5 degrees.

Instead of starting a new post, I need more information about the rear camber...

I looked closely at 5 other 911s today and the rear camber seemed to fall into 2 different categories (either unnoticable or what I have, about 3/4" in at the top of the wheel - see pics).

What is correct? I had me car aligned last week and was told by the shop that the camber isn't adjustable on the 911s, I brought them the instruction off this site. They didn't give me a print out so I couldn't see where it was at but did claim it was inspec... They offered to set it where ever I want tomorrow so... where should it be?

http://www.engr.uvic.ca/~ssherman/911/DSC02045.JPG

http://www.engr.uvic.ca/~ssherman/911/DSC02044.JPG

Damn, I gotta quit posting such big pictures...

unclebilly, you most likely already know this... the bottom or lower end of the level should touch the wheel if you are going to measure from the wheel at the top.

yah, so just subtract the 3/8" or so off.

Okay, I just measured mine with stock t-bars, sport bils, rolled front lips.

front 5/8 camber, 225/50 on 7x16 fuchs, RH 25 1/4"
rear 13/16 camber, 245/45 on 9x16 fuchs, RH 24 3/4"

Don't know what toe or caster are set to.

Tony