Check out this site about vibrations under braking
To check the wheel bearing, raise the wheel and spin it while holding onto the spring. If it's bad bearings, you can feel them crunching in the races.
As I've grown older, I've learned that pleasing everyone is impossible but pissing everyone off is a piece of cake
2012 A7 3.0T Prestige, Ibis white/Nougat/Ash, 20" Sport, ACC, LED, HUD, Ferrada FR2 wheels, AWE Touring exhaust, Adam's Drag II rotors