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      11-16-2018, 07:53 PM   #1
taranfx
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Red face Wheel alignment specs recommendations?

I'm not sure which one is the official spec for 35iS but here are few I found on forums:

Front:
Camber: -.1 to -1.1 degrees
Caster: 6.5 degrees (no range listed)
Toe: .02 deg to .22 deg
SAI: 14.2 deg
Included Angle: 13.6 deg

Rear:
Camber: -1.9 to -2.8 deg
Toe: .05 deg to .25 deg.


#2
front camber -0.8 deg to 0 deg, toe +0.08 deg to +0.15 deg,
rear camber -2.1 deg to -1.9 deg, toe +0.12 to +0.18 deg

#3
Front toe in +0.5mm per side
Rear toe in +2mm per side
Rear camber -1.6 degrees

For daily street use and weekend canyon carving, what would be optimal for:
1. good tread life
2. good traction.
3. still decent handling.

19" wheels with Michelin PS4S.

Has anyone played with alignment specs?
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Last edited by taranfx; 11-16-2018 at 08:01 PM..
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      11-16-2018, 11:40 PM   #2
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The main thing I've learned aboout Z4 alignment over the years is keep the rear negative camber to a minimum (1.8 degrees or so) to avoid inside shoulder wear.
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      11-17-2018, 01:30 PM   #3
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If you decrease rear negative camber you lose the ability to hold a corner as well as before. Your specs depend on your driving preferences.
As I see it, I didn't get this car to maximize tire life.
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      11-17-2018, 08:05 PM   #4
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Quote:
Originally Posted by jparnes1 View Post
If you decrease rear negative camber you lose the ability to hold a corner as well as before. Your specs depend on your driving preferences.
As I see it, I didn't get this car to maximize tire life.
Quite right, but using this thing as a DD as my wife does, tires (especially with the damned staggered setup) can get to be an expensive consumable.
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      11-18-2018, 06:29 AM   #5
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Quote:
Originally Posted by paris1 View Post
Quote:
Originally Posted by jparnes1 View Post
If you decrease rear negative camber you lose the ability to hold a corner as well as before. Your specs depend on your driving preferences.
As I see it, I didn't get this car to maximize tire life.
Quite right, but using this thing as a DD as my wife does, tires (especially with the damned staggered setup) can get to be an expensive consumable.
Are you purchasing tires that match your needs? The OEM tires are way too soft for daily driving. I blew my rears away in 18,000 miles. Freeway and conservative driving. Did that in 7 months.

Moving to a new house next month that's drops my commute from 43 miles each way to 4.5 miles.
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      11-18-2018, 09:15 AM   #6
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Rear Camber

When I had over 2+ degrees negative camber and I was driving fairly hard, there would be layer of tire dust on the back half of the car. Needless to say the tires wore out very quickly on the inner side. The traction was so good that the limits were scary high and really required practice for any given corner. I have set up cars for autocross, and track use and this would be a great setting for very tight turns on dry pavement.
I had mine reset to the minimum camber. It does not stick as well and I now use the DSC carefully. I also have had enough of foolishly fast cornering, so I am good with that.
Also I am not a big fan of oversize rear tires. I think Porsche started it and it does look cool.
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      11-29-2018, 04:59 AM   #7
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Quote:
Originally Posted by impulsE89 View Post
When I had over 2+ degrees negative camber and I was driving fairly hard, there would be layer of tire dust on the back half of the car. Needless to say the tires wore out very quickly on the inner side. The traction was so good that the limits were scary high and really required practice for any given corner. I have set up cars for autocross, and track use and this would be a great setting for very tight turns on dry pavement.
I had mine reset to the minimum camber. It does not stick as well and I now use the DSC carefully. I also have had enough of foolishly fast cornering, so I am good with that.
Also I am not a big fan of oversize rear tires. I think Porsche started it and it does look cool.
Do you know the official specs for alignment. I get different numbers from each forum post. And what do you recommend?
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      11-29-2018, 09:26 PM   #8
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      04-25-2019, 03:59 PM   #9
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Bump to see if any new opinions to the OP. I plan to run as little camber as possible a setup as possible but not affect performance while helping w tire life on my summer 18s. Are the specs still good?
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