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Originally Posted by MNBoxster
Hi,
Hard to tell from just the pics. If most of your driving is straight-ahead Freeway driving, than I'd say you have an issue, but if you drive primarily in the twisties, given the mileage, I'd say there is no problem.
The stock Boxster has positive Toe and positive Camber (+5' ± 5' and +5' ± 30' respectively). So negative Toe and Camber can't be the issue. But what may be the culprit here is the allowable difference L to R for both Toe and Camber (-1° 20' ± 30' and 20' respectively). This sort of looks like the case to me, as if the tires are fighting each other. I'm also assuming that you don't travel with excess weight in the front? In any event, 22k mi. from the fronts is about in the middle of the normal wear range...
Happy Motoring!... Jim'99
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The wear is on the inside of the tires.
Here's the "after" readings from the alignment I had done 22,000 miles ago:
Camber: Left 0 degrees 12 minutes Right 0 degrees 2 minutes
Caster: Left 7 degrees 52 minutes Right 7 degrees 44 minutes
Toe: Left 0 degrees 2 minutes Right 0 degrees 3 minutes
I used these tires to drive 7000 miles to the last two Parades and back, but the rest is mainly in the twisties. Both trunks were fully loaded for the Parade trips.
BTW my rear tires always wear out with the same pattern every 15,000 miles. During the same alignment the rears were set at:
Camber: Left minus 1 degree 40 minutes Right minus 1 degree 42 minutes.
Toe: Left 0 degrees 5 minutes Right 0 degrees 6 minutes
Total toe: 0 degrees 11 minutes
Thrust angle: 0 degrees 0 minutes
The car has 57,000 miles...