Just to clear up, the vib wasn't extremely noticeable, but was something that we did feel. And with the amount of money being spent, I wanted zero vibration.

To be honest, I'm thinking that one of them must have had a slight bend we didn't make it that far into the investigation process. One trip, they balanced the tires. On another, they found the tires had uneven wear and replaced them. And finally, they did a road force balance. After that, my wife (who drove the Range the most) was a little upset about the three trips. So, to appeaser her (and get 4.8) I talked to the dealer about getting me into something else. To make the sale and subsequently more money, they were more than happy to fulfill our request.