Hey Rich K. thanks a lot for your input--much appreciated. So it's possibly the rear rotors causing the vibration? But those haven't been touched, I only had the front pads and rotors replaced last month. I'm actually still on the original rear rotors although the pads have been changed before but that was quite a while ago (at least 6 months or even a year ago). But thanks for pointing that out, I will do some more investigating and take a good look at those rear brakes now.