Hard Finding 225/55R/17's

http://www.tirerack.com/tires/tires.jsp?tireMake=Yokohama&tireModel=AVID+H4S&vehicleSearch=false&partnum=255HR7H4S&fromCompare1=yes&place=18

^Back when I had a Grand Prix I had these tires.^
Buy these and you will not be disappointed.

Although an optimal solution to your problem would be to get a set of tires for winter and another set for summer. Just depends on you price range. Also I don’t follow your statement about not being thrilled about buying Japanese tires. They make why better tires than just about any US company and at 1/2 the price.