Not normal; and I ran these on my A8L W12
Thus, even heavier model than yours. Have run Sport A/S's for about 20K miles in past few years, My summer PS2's wore through their whole life pretty evenly and finally got replaced at 2/32's on some last fall pre-rain; opted to put the A/S's back on that I had run the prior winter. Now running full time.
You could get it aligned--wear looks fundamentally like a toe issue, but...
From having seen wear like this on my A6 4.2, I would say look for suspension issues. On many Audi's, and the D3 (A8) specifically, likely the front upper control arms. If the inner bushings on those control arms are worn, the alignment will not just be off, but move around. Also check tie rod ends. The combo of those two was leading to some chewed up tires on my A6, very similar to the wear seen on yours. Your rears may be showing some signs from when they were on the front and got stressed.
Since replacing the parts and getting aligned, all seems well again on the A6. And again on my A8 w/ identical tires, no such problem at all; I have had the front control arms on that car replaced under warranty.
Last edited by MP4.2+6.0; 05-06-2012 at 09:11 AM.