what cause the car to vibrate when riding down the road
what cause the car to vibrate when riding down the road on 2004 Honda Accord
have your tires checked for shifted belts.
Your tire pressure could be off or you probably need an alignment
Try having the tires balanced or jack up the car spin the wheels see if they spin "true" get the tires that spin the most "true" on the front of the car and have them balanced. If the tires are balanced and you still have a problem check for worn suspension bushings or damaged or worn steering components.