contacted dealership and the service manager said the tire they put on the car is not the one quoted. they were supposed to in fact install the Hankook tire. so they switched it out. they were really good about it and apologized for the mistake.
i know the Hankook tires have bad reputation, however I haven't had any trouble with them. the car runs smooth as silk for me. but then I live in Dallas TX so the terrible roads probably mask any tire issues anyway!!
further, i'm a very conservative driver, so the exact kinda driver this car was made for
2015 K900 VIP Titanium Bronze over White interior