I have a 2000 4Runner with 178,000 miles. I have had a alot of maintenance lately and still have a vibration coming from the front. The following maintenance has been done. New tires, new brakes, rotors, calipers, u-joints and the tires have been rebalanced. The vibration starts at 60 mph and seems to lessen above 75 mph. Above 60 it happens wether the gas pedal is depressed or not.