I was driving home the other night and when I was making a u-turn i noticed i heard and felt like something was vibrating rapidly through my peddles. the sound is similar as if you were driving and suddenly slammed your brakes in which they try to catch the rotors rapidly and stutter.

 

check under the car. it might be a plastic piece rubbing on the tire. maybe a wind deflector or fender liner.

 

When you hit the brakes hard, that is the abs you are feeling, not the brakes grabbing the rotors and stuttering.

And it sounds like something is rubbing. If it were more of a cracking/popping noise as you applied gas during the turn I would say it were a CV joint.

 

alright thanks for the input guys. its most likely rubbing cause of my driver side fender liner. the stupid hole where the you screw it on the fender was ripped a long time ago so it hangs a little loose.