Nissan Repair: humming sound, nissan bluebird, bluebird

Question
good day! i have a nissan bluebird'95. sometimes, i'm hearing a humming sound most probably at the rear when my car is running around 20-60kph. But sound will stop everytime i pushed the brake pedal, even at half. i'll appreciate ur advice.

Answer
Alexis,

I would remove the wheel and brake and look at the bearing on the side that is making noise.  I would think the bearing is going out from what you describe.  Now, there could be another thing like the brake lightly touching and when you touch the brake the noise goes away since there is pressure on the brake material.