was it a used hub assembly you put in?

if not then at least you know you dont have to replace that bearing for awhile. check axle boots and cv joints for rips/holes, spin the tire see if it has any drag, maybe your brakes are stuck. Is it still the humming sound? if the driver is hearing it on the right good chance its on the drivers side and if the passenger hears it on the left good chance its on the right, happens a lot. Hard to tell exactly unless you do the test i suggested or load the car and get everyones opinion.

 

I replaced the Hub/bearing assembly with a brand new one. I had the right side bearing replaced 1 year and a few months ago, so i decided to change the bearing on the left side. As far as the brakes sticking, i just put new pads,rotors and new slide pins with all new grease. That damn noise is driving me nuts. As far as the the joints with the rubber boots, they both seemed to be in ok shape, but thats just a visual from a non experienced weekend mechanic wanabee , ME! im almost tempted to just change the other bearing, so i can eliminate the whole bearing idea!

 

if it's still humming it probably is the other bearing, take it somewhere and just get them to check it, they probably wont charge.

 

Is it possible that the callipers on the front are bad? maybe they are sticking causing the pads to be compressed all the time.

 

If you are driving straight down a flat road does the car pull one way or another? I caliper that is sticking will make the car pull to whatever side is sticking.

 

No, it doesn't pull. Well balanced and stays straight!

 

I would say that it isn't a caliper problem then.