I just got my 2009 Premium + Nav Prius today and I had the dealer install Bridgestone Blizzak WS-60 winter tires. These tires seem to work exceptionally well with this car! We are frozen solid here right now with a very hard ice layer on the road yet I have great traction. I think I love this car!
Welcome to PC Duskrider!! I have several questions. First, what tire pressure do you use in 'em? do you have a engine block heater installed? do you use the front grill block? What's your mileage so far?