For my 2 cents worth, if you've had a set of tires you're happy with, I'd stick with them. My CPO 2004 X3 came with a brand new set of Bridgestone Tourenzas. Within the year, 15,000 miles or less, they were badly cupped and produced almost unbearable road noise. So I'm in search of something better. For now, I'm trying some General Altimax HP's. The reviews on Tire Rack were good. We'll see. In Chicago, you might also try tiredealsforless.com. Tire Rack was out of the Generals when I wanted them but these guys (I think they're in Elmhurst) delivered my set the next day. Good luck.