Title edited to convey point more succinctly.

Hello All,

I have experienced some abnormal tire wear on the driver's side front tire, the abnormality being extreme inside tire wear -- it looks as though I have been running 3+ degrees of negative camber for several thousand miles, with the inside nearly cording while the outside and middle are fine.

Other relevant facts:

• 2005 MCS with factory LSD
• Stock suspension and run flats (205-45-17) on web spokes
• Tire wear at other three corners appears normal

I opted to have my dealer check the alignment due to the fact that the car is in an unmolested state and because I have experienced a slight pull to the left for some time -- the hope being getting everything covered under warranty without any cost to me (yeah, sure...).

Here are the before and after alignment specs -- what I am hoping for is some help in dissecting the data to determine what may be causing the abnormal tire wear pattern (primarily) and the pull to the left. The only thing that stands out to me is the asymmetric SAI values, but I do not know whether they could cause both of my problems.

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Parameter : Before Alignment : Factory Target Value : After Alignment
As usual, (-) toe = toe out

LR camber: -1°51' : -1°45'+/- 20' : -1°54'
RR camber: -2°03' : -1°45'+/- 20' : -1°53'
LR toe: 0°3' : 0°12'+/- 04' : 0°11'
RR toe: 0°8' : 0°12'+/- 04' : 0°13'
total rear toe: 0°12' : 0°24'+/- 8' : 0°23'
Geom. Driving axis: -0°02' : 0°0'+/- 10' : -0°01'

LF camber: -0°29' : -0°30'+/- 25' : -0°28'
RF camber: -0°32' : -0°30'+/- 25' : -0°34'
LF toe: -0°06' : +0°09'+/- 03' : +0°09' (biggest change)
RF toe: -0°06' : +0°09'+/- 03' : +0°09' (biggest change)
front total toe: -0°14' : +0°18'+/- 05' : +0°19' (biggest change)

L track differential angle: -1°33' : -1°16' +/- 30' : -1°33'
R track differential angle: -1°33' : -1°16' +/- 30' : -1°33'

L max steering lock on curve inside wheel: 29°44' : 30°36' : 29°44'
R max steering lock on curve inside wheel: 30°31' : 30°36' : 30°31'

LF caster: 4°07' : not provided : 4°07'
RF caster: 4°16' : not provided : 4°016'
LF SAI: 9°57' : 11°31' +/- 30' : 9°57' (1.5° out of spec)
RF SAI: 4°09' : 11°31' +/- 30' : 4°11' (7° out of spec(!); something must be bent. any ideas?)

total setback: 0°01' : 0°00' : 0°01'

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I assume the asymmetric SAI values could cause my slight pull to the left? But what about wearing the inside of the LF tire? Assuming there were no broken or bent parts (apparently there weren't, according to MINISF, but I don't see how this is possible since SAI isn't adjustable, right?), I expected to see some way-off toe out value for the LF. However, toe was equal between left and right front, and reasonable (I think) at -0°06'. Frankly, I liked the turn in the car had -- it didn't seem too nervous for my tastes. Now it's toed inward quite a bit.

And while rear toe can affect the car to a great degree, am I wrong to think that +0°03' (L) and +0°08' (R) isn't enough to cause too much strangeness, particularly with respect to LF tire wear? Generally people like some toe in on the rear, and 05' isn't really that big a variance is it?

The values I didn't notice in my rush to get out of the dealer and back to work were the SAI values. These seem quite problematic, and I recall MEB, I think, mentioning that unequal SAIs can cause various problems, like the pull. What can cause the values to be so askew? Something must be bent, but what's most likely? I don't think I have any mushrooming to speak of (and I would think it would have to be severe to cause a 5 degree difference), and while I have tracked the car, I have not had any offs, and I wouldn't think a strut tower would be tweaked.

Any thoughts or advice?

Thanks,
Jeff