All quattro cars have a tendency to odd tyre wear in my experience. My last A6q would 'cup' its rear tyres, leaving the tread blocks looking like saw teeth. At the point it sounded like I had a bad bearing I'd swap them side to side and wear them flat again.
My first D2 liked Michelins - it would get 36K a set and wear all four perfectly. I put Avons on it once and it destroyed the inner edge in 5K. Back to Michelins, all good again. No change in alignment.
These days I tend to get bored of the wheels before the tyres wear out
