Brakes Vibrate?

[explicitdwk]

For the last several months, when easy on the brakes, they kind of vibrate and it can be felt and heard in the whole cabin. I was told by an indie that my front brakes are wearing down and honestly it has been getting more and more annoying when particularly stuck in traffic and i have to break often. the vibration happens when breaking at speeds lower than 5mph.

(on my last few days of factory warranty) The dealer refuses to admit that they're getting old and claim they work perfectly fine. So tomorrow i'm going to a ride with someone from the dealership and I'm kinda nervous that they will claim that the vibration is normal. Am i going crazy or can this really be a problem?