I have weird grinding noise on the left back wheel when I break. I just changed the pads from Nissan, and just checked them again and they still have a bunch of life left. I proceeded to resurface the break disc and the noise is still there. Any help? I cant figure out what it is.

 

Im sorry not left but the right side of the car

 

Its brake. Your welcome problem solved.

 

Probably a wheel bearing

 

This is a joke, right? Your statements are an abortion of English.
I've changed my mind. You are joking and it is hilarious.

 

Specify what you mean by abortion of English

 

Check the brake pad installation. I bet that you put in a pad in backwards, with the shim towards the rotor.

Sounds like a ludicrous concept, but it's easy to do if you change the pads while tired/drunk at 3 AM. Ask me how I know

When you had the rotor resurfaced, was it scratched/grooved on only one side?

 

Not likely, but it could be that the ABS is activating inappropriately.

Do you hear the grinding noise every time you apply the brakes?

--Spike

 

OP did mention that he rechecked and it sounds like they're on correctly. My guess is that it could possibly be a wheel bearing or maybe even the dust shield is slightly warped or something?