Here's an example... Costco price installed for some ultra high end Michelin Pilot Sport Cup 2 summer tires (no specials offered on these!). Want crazy high performance tires? Who can match this price? I won't put them on my car as I prefer AS but these are some crazy mean tires. A search of Tire Rack seems to indicate they don't even have these in stock... But Costco can get them! I can only imagine what my XF could do with a set of these. But as a year-round daily driver, I can't run something like this.