2017 Santa fe Se AWD 3.3

New Hyundai owner bought yesterday. Taking car back to the dealer on Monday for a vibration problem at highway speeds. Not feeling the best about my purchase right now. Feels like a tire issue, Kumho tires. I purchased a set of these tires once before and was very disatisfied. Would never buy them again. I hope the dealer makes this right. I have about a hundred miles on this car and I am hoping this is not a sign of things to come. The car drove home fine, me and the wife went out today and noticed the vibration. Almost feels like out of round or broken steel belt. Hoping it is that simple.......
Fred