So the OEM wheels and tires then?Match the aspect ratio, offset, wheel/tire weight to the OEM wheel/tire and there should be no warranty issues.
That's thinking about this way too hard. You can put different tires and wheels on your car. Under no circumstances should you put the *wrong* wheels and tires on your car, so as long as what you do is safe it's fine.
For example, if Tire Rack, Discount Tire, Les Schwab, Tire Kingdom, etc. recommends it for your application, then it's a verified safe fit.
I also found a post from Audi USA on this topic: