Originally Posted by berry1234

I would for sure have them road force them. Call the manager and they should do it for free. Also, I dropped mine off before for them to be road forced but it didn't do anything-I suspect they did a reg. balance, which on my tires, shows up ok. This time, the manager was really cool and said I will personally watch them do it and gave me a report after each tire. It did take a while-1 hour. Two of the tires were 7 pounds of force, the 38 and other 27.

He said anything over 25 pounds is grounds for a new tire and can be felt in the wheel. If your vibration is speed related, I am 99% sure it's the balance. Fords are sensitive to this.