The CT200h that I test drove had a sticker in the window that said "17-in performance tires are expected to experience greater tire wear than conventional tires. Tire life may be substantially less than 20,000 miles, depending on driving conditions." I read the same footnote on the Lexus website. I certainly don't want to be putting a new set of tires on this vehicle every year. It would more than negate any fuel savings. Can someone shed some light on this subject? Is this what I can expect from any tires that I buy for this vehicle or just the factory installed tires? Thanks.