steering vibration on 2003 Toyota 4Runner

I feel and hear a vibration/humming noise while driving my 2003 4runner. The vibration feels like tire noise, only more pronounced ecspecially after 35mph.

1 answer
Have the tires ever been rotated as a 4 wheel drive vehicle will wear cups into the outer edges of the front tires and will become very noisy due to not rotating, Have a shop rotate the tires http://repairpal.com/directory?address=60656&car_brand_names=Toyota