I downsized in diameter and width for these tires, and it is a good combination for the Audi Quattro. Tire Rack shipped quickly with the wheels I ordered.
Within a month of putting these tires on I got a chance to put them to the test. Calgary was hit with a sudden, disastrous snow storm at evening rush hour, with all city roads freezing overand not a sanding truck in sight. Unfortunately I had to go out in this---to pick up my wife who was stranded in her car with its all-seasons. Major arteries heading north out of the downtown core were closed due to wrecks and stalled vehicles, so I had to try a hill on a side street. An AWD SUV had slipped sideways about ¼ of the way up this hill so I had to wait until bystanders got it turned around. I was a little apprehensive as this hill is quite steep, and usually closed with any kind of ice or snow. It starts out fairly flat but then the grade increases sharply about halfway up. I gave the car some gas and....it climbed right up the hill without the traction control even coming on! I couldn't believe it. Felt a bit like the Audi commercial on the ski ramp (which I might almost believe now). Spent the next 2 hours winding through back alleys and dodging wrecked vehicles getting to my wife, and then back home. I immediately concluded that these were the best snow tires I have ever owned.
I followed this trial with a run through a deep snow drift about two weeks later in one of Calgary's unplowed industrial parks. I thought for sure I was going to hang right up in it, but the Audi clawed right through for almost a half block. I measured the snow at 20" deep afterwards!