I found it to be a bit of a Bitch to buy snow tires for the TC only because Costco would NOT install my BF Goodrich Blizzak WS70! The reason why is because the rear tires, the recommended air pressure for the rears is 49 lbs and the Blizzaks are max 44lbs lbs
They are actually load rated higher then the stock tires and the traction in the snow is amazing! Best snow tire I have ever used A++++++
http://www.tirerack.com/tires/BigPic.jsp?sidewall=Blackwall&tireMake=Bridgestone&tireModel=Blizzak+WS70&sidewall=Blackwall&partnum=16TR6WS70