[starboy]

I have a 2001 Windstar SE Sport. When driving down the road we hear what appears to sound like road noise. It is worse about 60 miles an hour. There is no noise when braking or turning. The tires have been checked and rotated. When tires were rotated the noise seemed to get worse. It is on the passenger side front. Both front rotors get extremely hot with very little braking. The van does not pull when braking and there is no noticable vibration in the steering wheel. The back drums stay cool. The noise is kind of between a hum and a thump. What should I be looking out to get rid of this noise?
Starboy