I'm getting a weird vibration in the brake pedal which corresponds to how high the RPMs are. At idle, there's barely any vibration, at driving speeds/RPMs, if I let off the gas and leave it in gear it vibrates quite a bit. It also does this in idle not moving, so I'm sure it's not a warped rotor or anything of the sort.
I was thinking a motor mount? but I'm no pro with braking systems so maybe one of you can help me out.