Just purchased my 07' Sprint Blue RS4 a couples weeks ago. This car is incredible. Wondering if any current RS4 owners have some advice on winter tires? Since Tirerack doesn't offer a 19" Pirelli Snowsport I'm investigating downsizing to an 18" to stay with Pirelli. Blizzaks are not my favorite.

Also, does anyone have a source to purchase OEM RS4 19" rims? Thanks.