grinding/heavy vibration from front wheels

I just starting to hear a Grinding/ heavy vibration coming from the front left side. I pulled the wheels and the brakes were worn out. It has 70.000 miles on it and they were replaced before. I also put new rotors on and rotated the tires to see if that would help. It sounds like it could be a bad bearing? It looks like you can't just buy a bearing. It's a complete unit w/ the lug bolts also. If this is what I need. Is it a big job for a do it yourselfer? Thanks Jack :confused:

hmmm im tring to figure out if its the brakes or not. Brake would be a grinding noise if they are that bad y...it would be metal from pads rubbing the rotors.....is t louder and harder when you hit the brakes? I wheel hub (wheel bearing assembly) its more like a constant hum...when you turn the wheel right or left it would stop and/or quite down depending on what side it is..You can do it yourself if you are okay with cars. Thay sell/rent the tools you well need to make thing allot easier....

hmmm im tring to figure out if its the brakes or not. Brake would be a grinding noise if they are that bad y...it would be metal from pads rubbing the rotors.....is t louder and harder when you hit the brakes? I wheel hub (wheel bearing assembly) its more like a constant hum...when you turn the wheel right or left it would stop and/or quite down depending on what side it is..You can do it yourself if you are okay with cars. Thay sell/rent the tools you well need to make thing allot easier....
Ya the front pads and rotors I just replaced today and rotated tires. It is a constant loud hum. Its the loudest at 45 mph. Didn't notice if it changed yet turning the wheel. thanks jack

FOUND OUT WHAT THE NOISE WAS. IT WAS THE FRONT DRIVERS SIDE TIMKIN WHEEL BEARING THAT WAS JUNK. IT IS A HUB UNIT WITH BEARING IN IT. :smile: