you mean braking or lifting your foot off the gas?

When braking at speeds over 20 miles an hour.
At the lesser speeds, it does not happen.

> I checked the front rotors and they had excessive
> wear, so I replaced them and the pad. The vibration is still there.
What
> might cause this?

incorrect torque procedure on the wheel lugs. use 2 stage [or more],
1324, 1324.

I will check this. Perhaps the mechanic did it 1234.