Hi, I'm looking for some advise. I have an A6 2011 C7 when I bought the car, a year past Sept, the cars'(feels like front) brakes were vibrating at the slightest touch, this was cured by the garage by renewing the pads. Now the same fault is happening again having done 14,000mls more. The fault occurs when driving at speed and starts as soon as I touch the brake pedal, the vibration seems to lessen the more the pedal is pressed. They work as normal at town speeds. The pads look ok. Has anyone had any experience of this?