lgball

Pirelli P Zero Nero is the OEM and only available AS tire for the 20" Audi rims (at least the ones on my 2013).

derfA8L

Three-tenths of an inch is always potentially meaningful, depending on the variables associated with speed, pothole depth/length, angle of impact and tire air pressure. Depending on your local road conditions, it could be a close call.

Audiseeker

right you are--and available at $201.00 a copy from Tire Rack

Not too bad

Lazydog

There are many variables at play here. How deep the hole, speed you hit it at, etc..etc...
In other words it could mean the difference.