My 08 LTZ came with the Firestone FR170s. They don't seem to be to bad of a tire. I push them pretty hard and they seem to be able to corner quite well (I am a firm believer in the statement a squealing tire is a happy tire and a squaling tire is an unhappy tire so people hear my tires squealing on corners a lot). The only issue I have with them is they have no snow traction at all. So when it snows we take the Tahoe with Blizzak snow tires on all 4 wheels. The sticker doesn't say the car came with touring tires but it does say the 18 inch wheels and tires were replaced with 17 inch chrome wheels w tires at a discount of $825.
Bill
Bill