Vibration/Noise when driving at normal speeds

I have a 1998 Honda Accord with ABS brakes. Recently, when I drive at almost any speed, I can feel vibrations and hear noise coming from what I believe to be my rear passenger-side wheel. It become noticable at speeds over 25 mph, and increases in intensity as my speed increases. I took the wheel off, and when I turned the rotor, I felt the rotor come into contact once per revolution with the brake pads. I examined the other rear wheel, and it too had the same problem. I am very surprised by this, because it didn't gradually appear, it suddenly happened when I started driving. I don't have a clue what caused it. Could the contact with the pads be causing my vibration? It is just minimal, I can still turn the rotor with my hands. If it is, how do I go about correcting it? Is there one component that controls both rear brake calipers? Thanks for all your help!

Two things I forgot: The vibrations do not occur when I apply the brakes, and they go away when I turn to the left, but become worse when I turn to the right. When I get done braking, the come back. This is what made me look at the brakes in the first place.

check to see if you can move your wheel left and right or up and down then check ball joints and wheel bearings but it sounds like inner wheel bearing.

It could be the wheel bearings, it could be an unbalanced tire, it also sounds like you might have rotor runout, try taking them to a mechanic or somewhere where they will turn/resurface your rotors, this process costs $7 per rotor, and have them look at it to see if it is uneven or needs to be replaced.

Pedros - What maked you think it is the inne bearings?

Igovert - I am taking the rotors to be turned tomorrow, hopefully that solves my problem. If it doesn't, I guess I am gonna have to break down and replace the bearings.

I tried looking up some parts online, what site do you guys favor for parts?

Thanks for the help!

(The vibrations do not occur when I apply the brakes, and they go away when I turn to the left, but become worse when I turn to the right. When I get done braking, the come back. This is what made me look at the brakes in the first place)
if it were the brakes it world vibrate while on the brakes enve more and u said it stops when you aply the brakes so it has to be wheel bearing

Well, in case anyone is even mildly interested in the outcome of this situation, getting the rotors turned and replacing the brake pads completely got rid of the problem. Thanks for the advice!

PS One think I noticed when I was taking everything apart was that the inside brake pads wore at an angle...they were thinner as you moved away from the center of the wheel. The disc itself also reflected this, it was slightly more worn towards the outside. In case this helps explain what was happening at all.

A few things may have caused this,
1) changing your pads and not resurfacing your rotors last time
2) improper breakin procedures on your new brakes. Don't simply go out and nail your brakes the first chance you get. You need to break them in properly so they mate properly with the pistons. Do a search for breaking in new brakes through heat cycles, it will prevent this from happening next time around.