And a final update on maintenance here, I have finally purchased tires...
http://i77.photobucket.com/albums/j76/81401/misc/tires-060607.jpg
http://i77.photobucket.com/albums/j76/81401/misc/tires-060607-2.jpg
Goodyear Assurance TripleTred, which are
extremely highly rated on TireRack. More money than I wanted to spend, but the second the guy said '80,000 mile tire' I said 'sold.' Hopefully I won't ever have to purchase tires again for this vehicle...
The car is now in perfect condition. I got an incredible deal on the purchase price, but the maintenance getting it up to this shape has made my deal pretty fair. That said, this is one of the lowest mileage, nicest-condition 2001 A4s around now that everything is complete. I've never been so confident in a car I owned.